Description
sympa version 6.2.16 and later contains a CWE-601: URL Redirection to Untrusted Site ('Open Redirect') vulnerability in The "referer" parameter of the wwsympa.fcgi login action. that can result in Open redirection and reflected XSS via data URIs. This attack appear to be exploitable via Victim's browser must follow a URL supplied by the attacker. This vulnerability appears to have been fixed in none available.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sympa | 6.2.36~dfsg-1 | — |
| Debian 13 | sympa | 6.2.36~dfsg-1 | — |
| Debian 12 | sympa | 6.2.36~dfsg-1 | — |
| Debian 9 | sympa | 6.2.16~dfsg-3+deb9u4 | DLA-2441-1 |
| Debian 8 | sympa | 6.1.23~dfsg-2+deb8u3 | DLA-1512-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | sympa | 6.2.40~dfsg-4ubuntu0.20.04.1~esm1 | USN-4442-2 |
| Ubuntu Pro 18.04 LTS | sympa | 6.2.24~dfsg-1ubuntu0.1~esm1 | USN-4442-2 |
| Ubuntu Pro 16.04 LTS | sympa | 6.1.24~dfsg-1ubuntu0.1~esm1 | USN-4442-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | sympa | 6.1.17~dfsg-1ubuntu0.1~esm1 | USN-4442-1 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Sympa version =>6.2.16 - Cross-Site Scripting http/cves/2018/CVE-2018-1000671.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Advisories 4
- USN-4442-2 sympa vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-1512-1 sympa - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2441-1 sympa - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-4442-1 sympa vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026