CVE-2026-44264
Weblate is vulnerable to XSS via crafted Markdown
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Weblate is vulnerable to XSS via crafted Markdown
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
- Record
CVE-2026-44264- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-80
- Updated
- 2026-11-02
EUVDEUVD-2026-28388
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
- Record
EUVD-2026-28388- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5cmv-3rc4-7279
Weblate vulnerable to XSS via crafted Markdown
Impact
The Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes.
Patches
Workarounds
Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks.
Acknowlegement
Michal Čihař has identified and fixed this vulnerability.
- Record
GHSA-5cmv-3rc4-7279- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-79, CWE-80
- Updated
- 2026-11-02
NVD
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
- Record
CVE-2026-44264- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-80
- Updated
- 2026-11-02
OSV
Weblate is vulnerable to XSS via crafted Markdown
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
- Record
CVE-2026-44264- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-80
- Updated
- 2026-11-02
OSVGHSA-5cmv-3rc4-7279
Weblate vulnerable to XSS via crafted Markdown
Impact
The Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes.
Patches
Workarounds
Even though the attacker might be able to inject code into the HTML, the Weblate's strict CSP should mitigate the risks.
Acknowlegement
Michal Čihař has identified and fixed this vulnerability.
- Record
GHSA-5cmv-3rc4-7279- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-79, CWE-80
- Updated
- 2026-11-02
OSVPYSEC-2026-2319
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
- Record
PYSEC-2026-2319- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2026:10929-1 No score
weblate-5.17.1-1.1 on GA media
These are all security issues fixed in the weblate-5.17.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:10929-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
weblatePyPI |
before 5.17.1 | 5.17.1 |
weblatePyPI |
before 5.17.1, plus listed versions 1.92.02.12.102.10.1 Show 45 moreShow less2.112.122.132.13.12.142.14.12.152.162.172.17.12.182.192.19.12.22.202.32.42.52.62.72.82.93.03.0.13.13.1.13.103.10.13.10.23.10.33.113.11.13.11.23.11.33.23.2.13.2.23.33.43.53.5.13.63.6.13.73.7.1 |
5.17.1 |
weblateopenSUSE:Tumbleweed From an advisory covering 4 CVEs |
before 5.17.1-1.1 | 5.17.1-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-44264 is a medium vulnerability (CVSS 4.3) in Weblate, published May 7, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in weblate 5.17.1.
References
github.com/WeblateOrg/weblate/security/advisories/GHSA-5cmv-3rc4-7279
nvd.nist.gov/vuln/detail/CVE-2026-44264
Left out here: 114 versions. The JSON record has them.