Apache Answer at a glance
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| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 0 | 0 |
| Oct 2026 | 13 | 2 |
| Sep 2026 | 0 | 0 |
| Aug 2026 | 6 | 1 |
| Jul 2026 | 0 | 0 |
| Jun 2026 | 7 | 0 |
| May 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| Mar 2026 | 0 | 0 |
| Feb 2026 | 1 | 0 |
| Jan 2026 | 0 | 0 |
| Dec 2025 | 0 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 0 | 0 |
| Sep 2025 | 0 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 1 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
37 results · Feed
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Critical 9.8
Apache Answer: Reaction API authorization bypass for restricted content
Missing authentication for critical function vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. The reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted c…
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Medium 5.4
Apache Answer: User Center integration does not revoke first-login sessions after central account suspension
Incorrect implementation of authentication algorithm vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. A flaw in the User Center login integration can cause a newly created external user session to omit its external identity, al…
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High 8.1
Apache Answer: Missing Authorization Allows Mutations of Non-Public Content
vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. Missing authorization checks allowed authenticated users to perform actions on non-public content they were not permitted to access. Users are recommended to upgrade to version 2…
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Critical 9.8
Apache Answer: Stale Visit Tokens Retain Access to Private Uploads After Session Revocation
Insufficient session expiration vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. Insufficient session invalidation allowed revoked users to continue accessing known private uploaded files with a stale visit token. Users are rec…
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Medium 4.3
Apache Answer: Improper Authorization Allows Disclosure of Non-Public Question Metadata
Exposure of sensitive information through data queries vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. An improper authorization check in the similar-question search allowed authenticated users to view metadata of non-public q…
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Medium 5.3
Apache Answer: Disclosure of Comments on Non-Public Content Through Public Profiles
vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. Unauthenticated attackers could access comments associated with non-public content through public user profiles. Users are recommended to upgrade to version 2.0.3, which fixes th…
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High 7.5
Apache Answer: Exposure of Hidden Question Metadata Through Public Answer Profiles
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. Unauthenticated attackers could obtain metadata associated with hidden questions through public answer profiles. Users …
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Medium 4.3
Apache Answer: MCP Answer Retrieval Exposes Content from Non-Public Questions
Missing Authorization vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. An authorization flaw in the MCP answer retrieval tool allows holders of a global API key to access answer content associated with hidden, deleted, or pendi…
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Medium 5.3
Apache Answer: Improper Authorization in Question Invite User Lookup
Missing Authorization vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. An unauthenticated or unauthorized user can retrieve the invited-user list associated with a non-public question due to missing visibility authorization che…
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Medium 5.4
Apache Answer: Email Code Purpose Confusion May Allow Account Takeover
A vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. A verification code issued for one email-based workflow could be accepted by another sensitive workflow because the code purpose was not properly enforced. Users are recommende…
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High 7.5
Apache Answer: Incorrect permission mapping allows users with only the unpin permission to hide/show questions
A vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. The question operation controller gates hide/show operations on the wrong permission check result (the unpin permission instead of the hide permission), so in custom role confi…
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Medium 5.4
Apache Answer: Stored XSS via unsanitized HTML in imported question content
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. The importer stores imported question bodies as raw HTML without passing them through the nor…
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High 8.1
Apache Answer: API keys logged in plaintext during authentication
Insertion of Sensitive Information into Log File vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.2. Full API keys are written to application logs on every authenticated request, allowing anyone with log-read access to recover and…
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Critical 9.1
Apache Answer: Residual Administrative API Key Access After Role or Account Revocation
Insufficient Session Expiration vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Administrative API keys remained usable after the owning administrator was demoted or the account was marked inactive, suspended, or deleted, allo…
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High 7.5
Apache Answer: Unauthorized disclosure of deleted or pending answer content
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Deleted or pending answers could be retrieved by unauthorized users through the single-answer read path when the parent…
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Medium 6.5
Apache Answer: Missing authorization in revision audit reject allows authenticated users to reject pending revisions
Improper Authorization vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Any authenticated user can reject arbitrary pending edit-revisions without review permission due to a missing authorization check on the reject operation. …
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Medium 6.5
Apache Answer: Improper authorization in avatar update cleanup allows authenticated users to delete arbitrary uploaded files by URL
Improper Input Validation vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing ownership check in the avatar-cleanup logic allows any authenticated user to delete other users' uploaded files by supplying their file URLs. …
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High 7.5
Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow
Insufficient Verification of Data Authenticity vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user…
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High 7.5
Apache Answer: Denial of service via crafted Accept-Language header parsing
Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive…
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High 7.2
Apache Answer: AdminToken not invalidated after admin deactivation
Improper Restriction of Security Token Assignment vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. Previously issued administrative tokens were not invalidated after an administrator account was suspended, deleted, or deactivat…
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Medium 6.5
Apache Answer: Unlisted Questions Accessible via Direct API Access
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. The unlisted question feature did not enforce access restrictions on direct API endpoints, allowing authenticated users…
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Medium 5.4
Apache Answer: HTML Content Injection in Email
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. User-supplied content was included in notification emails without proper escaping, allowing authenti…
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Medium 6.5
Apache Answer: The custom avatar was not properly validated
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. The server did not sufficiently validate user-supplied image URLs, allowing arbitrary external content to be embedded as profile i…
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Medium 6.5
Apache Answer: Uploading specially crafted TIFF files causes an Out-of-Memory error
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. A crafted TIFF image could trigger excessive memory allocation during image decoding, allowing an authenticated user to cause the …
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Medium 6.1
Apache Answer: Authorization Bypass in Timeline API
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. Timeline-related APIs lacked proper authorization checks, allowing regular authenticated users to access deleted…
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Medium 6.1
Apache Answer: XSS in AI Answer Rendering
Improper Neutralization of Alternate XSS Syntax vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. AI-generated response content was rendered in the browser without proper sanitization, allowing malicious scripts to be executed w…
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High 7.5
Apache Answer: Revision API Improper Access Control leads to Information Disclosure
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer. This issue affects Apache Answer: through 1.7.1. An unauthenticated API endpoint incorrectly exposes full revision history for deleted content. This allows unaut…
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Medium 6.5
Apache Answer: Using externally referenced images can leak user privacy.
Private Data Structure Returned From A Public Method vulnerability in Apache Answer. This issue affects Apache Answer: through 1.4.2. If a user uses an externally referenced image, when a user accesses this image, the provider of the image may obtain private …
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Low 2.6
Apache Answer: Predictable Authorization Token Using UUIDv1
Inadequate Encryption Strength vulnerability in Apache Answer. This issue affects Apache Answer: through 1.4.0. The ids generated using the UUID v1 version are to some extent not secure enough. It can cause the generated token to be predictable. Users are rec…
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Medium 5.3
Apache Answer: Avatar URL leaked user email addresses
Inadequate Encryption Strength vulnerability in Apache Answer. This issue affects Apache Answer: through 1.3.5. Using the MD5 value of a user's email to access Gravatar is insecure and can lead to the leakage of user email. The official recommendation is to u…
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Medium 5.3
Apache Answer: The link for resetting user password is not Single-Use
Missing Release of Resource after Effective Lifetime vulnerability in Apache Answer. This issue affects Apache Answer: through 1.3.5. The password reset link remains valid within its expiration period even after it has been used. This could potentially lead t…
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Medium 5.3
Apache Answer: The link to reset the user's password will remain valid after sending a new link
Missing Release of Resource after Effective Lifetime vulnerability in Apache Answer. This issue affects Apache Answer: through 1.3.5. User sends multiple password reset emails, each containing a valid link. Within the link's validity period, this could potent…
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Medium 4.6
Apache Answer: XSS vulnerability when changing personal website
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Answer.This issue affects Apache Answer: before 1.3.0. XSS attack when user changes personal website. A logged-in user, when modifying their personal …
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Critical 9.1CVE-2024-22393 Public exploit
Apache Answer: Pixel Flood Attack by uploading the large pixel file
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.This issue affects Apache Answer: through 1.2.1. Pixel Flood Attack by uploading large pixel files will cause server out of memory. A logged-in user can cause such an attack by upl…
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Medium 5.4
Apache Answer: XSS vulnerability when submitting summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Answer.This issue affects Apache Answer: through 1.2.1. XSS attack when user enters summary. A logged-in user, when modifying their own submitted ques…
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Medium 5.9
Apache Answer: Repeated submission at registration created duplicate users with the same name
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Answer.This issue affects Apache Answer: through 1.2.1. Repeated submission during registration resulted in the registration of the same user. …
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Low 3.1
Apache Answer: Repeated submissions using scripts resulted in an abnormal number of collections for questions.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Answer. This issue affects Apache Answer: through 1.2.0. Under normal circumstances, a user can only bookmark a question once, and will only in…