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TI-2025-34860 Aliases CVE-2025-55181GHSA-886p-82g3-p77g

Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite…

Priority LOW 30CWE-834Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite loop in proxygen::coro::HTTPQuicCoroSession which blocks the backing event loop and unconditionally appends data to a std::vector per-loop iteration. This issue leads to unbounded memory growth and eventually causes the process to run out of memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00314 24th 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
None
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
Metaproxygenv2025.08.25.00 – v2025.12.01.00—No fix listedCNA
  • proxygen VendorMeta Affected v2025.08.25.00 – v2025.12.01.00 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:facebook:proxygen:*:*:*:*:*:*:*:*2025.08.25.00 – 2025.12.01.00VulnerableMeta
  • cpe:2.3:a:facebook:proxygen:*:*:*:*:*:*:*:* Versions 2025.08.25.00 – 2025.12.01.00 Vulnerable ·Meta

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55181
  2. 2026-10-03 Alias added: GHSA-886p-82g3-p77g

References

Patch 1

Advisory 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2019-08926 Out-of-bounds write in Meta Proxygen CVSS 3.0CRITICAL 9.8
  • TI-2019-08945 Use after free in Meta Proxygen CVSS 3.1CRITICAL 9.8
  • TI-2020-01824 Use after free in Meta proxygen CVSS 3.1CRITICAL 9.8
  • TI-2018-04667 NULL pointer dereference in Meta Proxygen CVSS 3.1HIGH 7.5
  • TI-2021-06346 Reachable assertion in Meta mvfst CVSS 3.1HIGH 7.5

Sources

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