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CVE-2026-57164: CWE-122: Heap-based Buffer Overflow in pjsip pjproject

0
High
VulnerabilityCVE-2026-57164cvecve-2026-57164cwe-122
Published: 09/04/2026 (09/04/2026, 17:11:55 UTC)
Source: CVE Database V5
Vendor/Project: pjsip
Product: pjproject

Description

PJSIP is a free and open source multimedia communication library written in C. Prior to commit 8d5956a, a heap buffer overflow exists in the PJLIB-UTIL HTTP client (http_client.c) when buffering an HTTP response body. This affects applications that use the PJLIB-UTIL HTTP client to receive a whole response body at once (a completion callback with no incremental on_data_read callback). When growing the response buffer, an incorrect size calculation based on the server-supplied Content-Length can leave the buffer too small, causing response data to be written past the end of the allocation. A malicious or man-in-the-middle HTTP server can trigger this with a crafted response; impact may range from unexpected application termination to memory corruption. Applications that consume the response incrementally (via on_data_read), or that only connect to trusted servers, are not affected. This issue has been patched via commit 8d5956a.

CVSS v4.0

Score 8.3high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-06-24T01:47:55.284Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a9afe70acd9273b49f0e675

Added to database: 09/04/2026, 17:22:56 UTC

Last updated: 09/04/2026, 18:07:09 UTC

Views: 6

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