CVE-2026-39845: Weblate is a web based localization tool

Q: How do I fix CVE-2026-39845?

weblate: upgrade to 5.17. Exact commands for each OS are on this page.

Q: Is CVE-2026-39845 being exploited?

CVE-2026-39845 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-39845 affect?

CVE-2026-39845 affects weblate. Severity is medium (CVSS 4.1). Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable t

Q: How urgent is CVE-2026-39845?

Priority 19/100. No elevated risk signals yet.

Routine

MEDIUM 4.1UPGRADE

CVE-2026-39845 is a medium-severity flaw (CVSS 4.1) affecting weblate. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable the webhook add-on as a workaround.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-04-15
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: weblate

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-15 19:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

weblate weblate UPGRADE

Affected: < 5.17

Fixed in: 5.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy weblate || rpm -q weblate || weblate --version

2. UPGRADE to 5.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade weblate

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade weblate

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-39845?

weblate: upgrade to 5.17. Exact commands for each OS are on this page.

Is CVE-2026-39845 being exploited?

CVE-2026-39845 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-39845 affect?

CVE-2026-39845 affects weblate. Severity is medium (CVSS 4.1). Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable t

How urgent is CVE-2026-39845?

Priority 19/100. No elevated risk signals yet.

Related CVEs

CVE-2026-33435 HIGH 8.0 UPGRADE Weblate is a web based localization tool
CVE-2026-34393 HIGH 8.8 UPGRADE Weblate is a web based localization tool
CVE-2026-34244 MEDIUM 5.0 UPGRADE Weblate is a web based localization tool
CVE-2026-33220 MEDIUM 6.8 UPGRADE Weblate is a web based localization tool
CVE-2026-40256 MEDIUM 5.0 UPGRADE Weblate is a web based localization tool

References

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