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CVE-2026-51954VulnerabilityPublished Updated

Webasyst Framework · Open Redirect

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Authoritative record:CVE-2026-51954· High 8.1

Not known to be exploited · CVSS 8.1 High : upgrade to 4.0.4 soon.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.18.1
EPSS
0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade webasyst/webasyst-framework to 4.0.4.

Affected software

ProductAffectedFixed in
GitHubwebasyst/webasyst-frameworkpkg:github/webasyst/webasyst-frameworkOther threatsAffected
  • <4.0.4
Fixed in
  • 4.0.4

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

An issue in Webasyst Framework 4.0.3 and before allows a remote attacker to execute arbitrary code via a crafted OAuth authorization URL with an arbitrary redirect_uri.

References

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