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TI-2026-05823 Aliases CVE-2026-6636GHSA-42cc-jrr3-ghpw

p2r3 convert API buildCache.js Bun.serve path traversal

Priority MEDIUM 57CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

A vulnerability was detected in p2r3 convert up to 6998584ace3e11db66dff0b423612a5cf91de75b. Affected is the function Bun.serve of the file buildCache.js of the component API. Performing a manipulation of the argument pathname results in path traversal. It is possible to initiate the attack remotely. The exploit is now public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00467 40th 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
No
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
p2r3convert6998584ace3e11db66dff0b423612a5cf91de75b—No fix listedCNA
  • convert Vendorp2r3 Affected 6998584ace3e11db66dff0b423612a5cf91de75b Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6636
  2. 2026-10-03 Alias added: GHSA-42cc-jrr3-ghpw

References

Exploit 1

  • TI-2025-42938 A write-what-where condition in p2r3 Bareiron commit 8e4d40 allows unauthenticated… CVSS 3.1CRITICAL 9.8
  • TI-2025-42937 An out-of-bounds memory access (OOB) in p2r3 Bareiron commit 8e4d40 allows… CVSS 3.1CRITICAL 9.1
  • TI-2025-42936 p2r3 Bareiron commit: 8e4d4020d is vulnerable to Buffer Overflow, which allows… CVSS 3.1HIGH 7.5
  • TI-2025-42935 p2r3 bareiron commit: 8e4d4020d contains an Out-of-bounds Read, which allows… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences