CVE-2026-34393: Weblate is a web based localization tool

Q: How do I fix CVE-2026-34393?

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

Q: Is CVE-2026-34393 being exploited?

CVE-2026-34393 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-2026-34393 affect?

CVE-2026-34393 affects weblate. Severity is high (CVSS 8.8). Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.

Routine

HIGH 8.8UPGRADE

CVE-2026-34393 is a high-severity flaw (CVSS 8.8) 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 user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-269
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 22:10 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-2026-34393?

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

Is CVE-2026-34393 being exploited?

CVE-2026-34393 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-2026-34393 affect?

CVE-2026-34393 affects weblate. Severity is high (CVSS 8.8). Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.

How urgent is CVE-2026-34393?

Priority 39/100. High severity

Related CVEs

CVE-2026-33435 HIGH 8.0 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
CVE-2026-33440 MEDIUM 5.0 UPGRADE Weblate is a web based localization tool

References

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