CVE-2026-33440: Weblate is a web based localization tool

Q: How do I fix CVE-2026-33440?

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

Q: Is CVE-2026-33440 being exploited?

CVE-2026-33440 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-2026-33440 affect?

CVE-2026-33440 affects weblate. Severity is medium (CVSS 5.0). Weblate is a web based localization tool. In versions prior to 5.17, the ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn't restrict possible redirects. This issue has been fixed in version 5.17.

Q: How urgent is CVE-2026-33440?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.0UPGRADE

CVE-2026-33440 is a medium-severity flaw (CVSS 5.0) 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 ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn't restrict possible redirects. This issue has been fixed in version 5.17.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 85%)
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-2026-33440?

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

Is CVE-2026-33440 being exploited?

CVE-2026-33440 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-2026-33440 affect?

CVE-2026-33440 affects weblate. Severity is medium (CVSS 5.0). Weblate is a web based localization tool. In versions prior to 5.17, the ALLOWED_ASSET_DOMAINS setting applied only to the first issued requests and didn't restrict possible redirects. This issue has been fixed in version 5.17.

How urgent is CVE-2026-33440?

Priority 21/100. 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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