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TI-2026-56198 Aliases CVE-2026-81421GHSA-77f3-qj56-x322

ddfourtwo sentry-selfhosted-mcp raw_sentry_api server-side request forgery

Priority HIGH 70CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A security flaw has been discovered in ddfourtwo sentry-selfhosted-mcp 0.4.0. The affected element is an unknown function of the component raw_sentry_api. The manipulation of the argument endpoint results in server-side request forgery. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00495 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ddfourtwosentry-selfhosted-mcp0.4.0—No fix listedCNA
  • sentry-selfhosted-mcp Vendorddfourtwo Affected 0.4.0 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:ddfourtwo:sentry-selfhosted-mcp:*:*:*:*:*:*:*:*——ddfourtwo
  • cpe:2.3:a:ddfourtwo:sentry-selfhosted-mcp:*:*:*:*:*:*:*:* Versions — — ·ddfourtwo

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81421
  2. 2026-10-03 Alias added: GHSA-77f3-qj56-x322

References

Sources