Description
Sqlalchemy mako before 1.2.2 is vulnerable to Regular expression Denial of Service when using the Lexer class to parse. This also affects babelplugin and linguaplugin.
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 | mako | 1.2.2+ds1-1 | — |
| Debian 13 | mako | 1.2.2+ds1-1 | — |
| Debian 12 | mako | 1.2.2+ds1-1 | — |
| Debian 11 | mako | 1.1.3+ds1-2+deb11u1 | DLA-4393-1 |
| Debian 10 | mako | 1.0.7+ds1-1+deb10u1 | DLA-3116-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mako | 1.1.3+ds1-2ubuntu0.1 | USN-5625-1 |
| Ubuntu 20.04 LTS | mako | 1.1.0+ds1-1ubuntu2.1 | USN-5625-1 |
| Ubuntu 18.04 LTS | mako | 1.0.7+ds1-1ubuntu0.2 | USN-5625-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | mako | 1.0.3+ds1-1ubuntu1+esm1 | USN-5625-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | python-mako +1 | 1.1.4-6.el9 | RHSA-2023:2258 |
| RHEL 8 | python-mako +1 | 1.0.6-14.el8 | RHSA-2023:2893 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | python3-mako | 1.1.4-6.el9 | ALSA-2023:2258 |
| AlmaLinux 8 | python3-mako | 1.0.6-14.el8 | ALSA-2023:2893 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | python-mako | 1.1.4-6.el9 | RLSA-2023:2258 |
| Rocky Linux 8 | python-mako | 1.0.6-14.el8 | RLSA-2023:2893 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | python-Mako | 1.0.7-150000.3.3.1 | SUSE-SU-2022:3979-1 |
| SLES 15 SP3 | python-Mako | 1.0.7-150000.3.3.1 | SUSE-SU-2022:3979-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE OpenStack Cloud Crowbar 9 | python-Mako | 1.0.7-4.3.1 | SUSE-SU-2022:3700-1 |
| SUSE OpenStack Cloud Crowbar 8 | python-Mako | 1.0.7-3.3.1 | SUSE-SU-2022:3701-1 |
| SUSE OpenStack Cloud 9 | python-Mako | 1.0.7-4.3.1 | SUSE-SU-2022:3700-1 |
| SUSE OpenStack Cloud 8 | python-Mako | 1.0.7-3.3.1 | SUSE-SU-2022:3701-1 |
| SUSE HPE Helion OpenStack 8 | python-Mako | 1.0.7-3.3.1 | SUSE-SU-2022:3701-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Mako | 1.3.0-2.1 | openSUSE-SU-2026:11567-1, openSUSE-SU-2024:13610-1 |
| openSUSE Leap 15.4 | python-Mako | 1.0.7-150000.3.3.1 | SUSE-SU-2022:3979-1 |
| openSUSE Leap 15.3 | python-Mako | 1.0.7-150000.3.3.1 | SUSE-SU-2022:3979-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.23 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.22 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.21 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.20 | py3-mako | 1.2.2-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.18 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.17 | py3-mako | 1.2.2-r0 | — |
| Alpine v3.16 | py3-mako | 1.2.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | python3-mako +1 | 1.1.4-3.amzn2023.0.3 | ALAS2023-2023-288 |
| Amazon Linux 2 | python-mako | 0.8.1-2.amzn2.0.1 | ALAS2-2023-2164 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | python-mako | 1.2.2-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | python3-mako | 1.1.4-6.el9 | ELSA-2023-2258 |
| Oracle Linux 8 | python3-mako | 1.0.6-14.el8 | ELSA-2023-2893 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | mako | < 1.2.2 | 1.2.2 | GHSA-v973-fxgf-6xhp |
Advisories 23
- ALSA-2023:2258 Moderate: python-mako security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2893 Moderate: python-mako security update AlmaLinux Security Advisories · Oct 29, 2026
- openSUSE-SU-2026:11567-1 python313-Mako-1.4.1-1.1 on GA media SUSE / openSUSE Security Updates · Aug 22, 2026
- WID-SEC-2023-1185 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 3, 2026
- WID-SEC-2023-1350 Splunk Splunk Enterprise: Mehrere Schwachstellen in Komponenten von Drittanbietern BSI CERT-Bund (WID) · Jul 1, 2026
- RHSA-2023:2893 Red Hat Security Advisory: python-mako security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2023:2258 Red Hat Security Advisory: python-mako security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-5625-1 mako vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-3116-1 mako - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:13610-1 python310-Mako-1.3.0-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3979-1 Security update for python-Mako SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3700-1 Security update for python-Mako SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3701-1 Security update for python-Mako SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2023:2258 Moderate: python-mako security update Rocky Linux Security Advisories · Dec 3, 2025
- RLSA-2023:2893 Moderate: python-mako security update Rocky Linux Security Advisories · Dec 3, 2025
- DLA-4393-1 mako - security update Debian Security (DSA / DLA) · Dec 3, 2025
- WID-SEC-2023-2229 Splunk Splunk Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- WID-SEC-2023-1542 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 18, 2025
- WID-SEC-2024-3377 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 12, 2025
- ALAS2023-2023-288 Moderate: python-mako security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 9, 2023
- ALAS2-2023-2164 Moderate: python-mako security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 25, 2023
- ELSA-2023-2893 Moderate: python-mako security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 24, 2023
- ELSA-2023-2258 Moderate: python-mako security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 15, 2023
References
- https://github.com/sqlalchemy/mako/issues/366
- https://github.com/sqlalchemy/mako/commit/925760291d6efec64fda6e9dd1fd9cfbd5be068c
- https://github.com/sqlalchemy/mako/blob/c2f392e0be52dc67d1b9770ab8cce6a9c736d547/mako/ext/extract.py#L21
- https://pyup.io/vulnerabilities/CVE-2022-40023/50870/
- [debian-lts-announce] 20220921 [SECURITY] [DLA 3116-1] mako security update mailing-list
- https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/