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Advisory record · GHSA-5fhx-9jwj-867m

Weblate: Authenticated SSRF via redirect bypass of ALLOWED_ASSET_DOMAINS in screenshot URL uploads

CVSS 5.0 MediumEPSS 0.0025 · 16th percentile

Published by the GitHub Advisory Database at 16 Apr 2026, 20:41 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
weblatePyPI<5.175.17
Identifiers
GHSA-5fhx-9jwj-867m · CVE-2026-33440 · PYSEC-2026-2312
Weakness (CWE)
CWE-918
Tags
Published
16 Apr 2026
Updated
13 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Weblate versions before 5.17 are vulnerable to a server-side request forgery. The ALLOWED_ASSET_DOMAINS setting was checked only on the initial request when Weblate fetched screenshot URLs, so redirects could reach domains outside the allowed list. An authenticated user who can upload screenshots by URL could use this to make the server send requests to other destinations. Upgrade to Weblate 5.17 or later.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.0 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0025, the 16th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:04 UTC First seen by agentprime
  2. 31 Oct 2026, 15:04 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.