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TI-2026-79301 Aliases CVE-2026-51954GHSA-c677-38c8-8xw2

Open redirect in Webasyst Framework OAuth enables code execution

Priority HIGH 70CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-601.

Summary

Webasyst Framework 4.0.3 and before accepts an arbitrary redirect_uri in OAuth authorization URLs, which enables an open redirect (CWE-601). A remote attacker can craft an OAuth authorization URL that a user must open, and the attacker can then execute arbitrary code. Successful exploitation gives high confidentiality and integrity impact.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00649 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Webasyst Framework.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-10-22 Threatist record created from CVE-2026-51954
  2. 2026-10-22 Alias added: GHSA-c677-38c8-8xw2
  3. 2026-11-02 CVSS score added · CISA ADP
  4. 2026-11-02 Weakness changed · CISA ADP
  5. 2026-11-02 CISA SSVC decision points changed
  6. 2026-11-02 Priority changed: LOW → HIGH
  7. 2026-11-03 EPSS moved to the 50th–90th percentile

References

Other 3

Sources

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