CVE-2026-32945
criticalpriority · attend · 49EPSS 0.003 · 25 %ileexploit · PoCEUUSEPSS · scored 2026-10-27
PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a Heap-based Buffer Overflowvulnerability in the DNS parser's name length handler. Thisimpacts applications using PJSIP's built-in DNS resolver, such as those configured with pjsua_config.nameserver or UaConfig.nameserver in PJSUA/PJSUA2. It does not affect users who rely on the OS resolver (e.g., getaddrinfo()) by not configuring a nameserver, or those using an external resolver via pjsip_resolver_set_ext_resolver(). This issue is fixed in version 2.17. For users unable to upgrade, a workaround is to disable DNS resolution in the PJSIP config (by setting nameserver_count to zero) or to use an external resolver implementation instead.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.1–9.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/pjsip/pjproject/commit/5311aee398ae9d623829a6bad7b679a193c9e199cnnvd
- https://github.com/pjsip/pjproject/security/advisories/GHSA-jr2p-p2w4-rr9qcnnvd
- https://www.pjsip.org/Patchcnnvd
- https://github.com/pjsip/pjproject/commit/5311aee398ae9d623829a6bad7b679a193c9e199enisa_euvd
- https://github.com/pjsip/pjproject/security/advisories/GHSA-jr2p-p2w4-rr9qenisa_euvd
- https://github.com/pjsip/pjproject/commit/5311aee398ae9d623829a6bad7b679a193c9e199Patchnvd
- https://github.com/pjsip/pjproject/security/advisories/GHSA-jr2p-p2w4-rr9qMitigationPatchVendor Advisorynvd
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