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Public proof of concept

CVE-2026-51954

Webasyst Framework Remote Code Execution via OAuth Redirect URI Manipulation

A public proof of concept exists; no exploitation attested.

  • Published2026-10-22
  • WeaknessCWE-601

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-10-22CVE publishedCNA
  2. 2026-10-2216:17CVE publishedNVD
  3. 2026-10-2318:46First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-11-02 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-51954?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-51954?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-51954 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-01 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedenvincion1991-cmyk/CVE-2026-51954Envincion/CVE-2026-51954
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Published
2026-10-22
Last Modified
2026-11-02
NVD status
Deferred
GitHub Advisory
GHSA-c677-38c8-8xw2

Frequently asked questions

What is CVE-2026-51954?

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.

Is CVE-2026-51954 actively exploited?

A proof-of-concept exploit exists for CVE-2026-51954, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-51954?

CVE-2026-51954 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

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Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

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Sources for this record