CVE-2026-34235

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{"affected": [{"affectedData": [{"product": "pjproject", "vendor": "pjsip", "versions": [{"status": "affected", "version": "< 2.17"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*", "matchCriteriaId": "3CEC20D0-E450-41AD-BCF9-4E407594F2A7", "versionEndExcluding": "2.17", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap out-of-bounds read vulnerability exists in PJSIP's VP9 RTP unpacketizer that occurs when parsing crafted VP9 Scalability Structure (SS) data. Insufficient bounds checking on the payload descriptor length may cause reads beyond the allocated RTP payload buffer. This issue has been patched in version 2.17. A workaround for this issue involves disabling VP9 codec if not needed."}, {"lang": "es", "value": "PJSIP es una biblioteca de comunicaci\u00f3n multimedia de c\u00f3digo abierto y gratuita escrita en C. Antes de la versi\u00f3n 2.17, existe una vulnerabilidad de lectura fuera de l\u00edmites en el heap en el despaquetizador RTP VP9 de PJSIP que ocurre al analizar datos manipulados de la Estructura de Escalabilidad (SS) VP9. Una comprobaci\u00f3n de l\u00edmites insuficiente en la longitud del descriptor de carga \u00fatil puede causar lecturas m\u00e1s all\u00e1 del b\u00fafer de carga \u00fatil RTP asignado. Este problema ha sido parcheado en la versi\u00f3n 2.17. Una soluci\u00f3n alternativa para este problema implica deshabilitar el c\u00f3dec VP9 si no es necesario."}], "id": "CVE-2026-34235", "lastModified": "2026-07-24T20:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34235", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-02T15:20:14.682515Z", "version": "2.0.3"}}]}, "published": "2026-03-31T16:16:32.767", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/pjsip/pjproject/commit/f4c7d08211da1fe2ad1504434a0ad99d12aa7536"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-pqrm-53pc-wx28"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.17)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "pjproject", "source": "cna", "vendor": "pjsip"}, "product": "pjproject", "vendor": "pjsip"}], "analysis": {"en": {"generated_at": "2026-04-03T17:51:33.106137+00:00", "value": {"mitigation_remediation": ["Update pjproject to version\u202f2.17 or later to apply the bounds\u2011checking patch.", "If an upgrade cannot be performed immediately, disable the VP9 codec in the application configuration to prevent processing of VP9 streams.", "Verify the library version at runtime or review the build configuration to confirm the patch is in place.", "Monitor for new advisories and keep the library upgraded as soon as possible."], "summary": {"action": "Immediate Patch", "impact": "Information disclosure"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the open\u2011source PJSIP multimedia communication library, known as pjproject. All releases prior to version\u202f2.17 are impacted. Applications that incorporate any older build of pjproject and process VP9 streams are susceptible to this read error.", "description_and_impact": "An out\u2011of\u2011bounds read can occur in the PJSIP library when it parses a VP9 scalability structure that has been specially crafted. The payload descriptor length is not properly checked, allowing the unpacketizer to read beyond the bounds of the allocated RTP payload buffer. This weakness is classified as CWE\u2011125 and may expose internal memory contents, leading to potential information disclosure.", "risk_and_exploitability": "The CVSS v3.1 score of 6.9 indicates a moderate severity, while the EPSS figure of less than 1\u202f% points to a low likelihood of exploitation. The issue does not appear in CISA\u2019s KEV catalog. Based on the description, it is inferred that an attacker may trigger the read by sending crafted VP9 RTP packets to the vulnerable application, though no proven exploit exists at this time."}}}}, "created": "2026-03-31T19:54:07.025654+00:00", "updated": "2026-04-03T21:17:35.305505+00:00", "vendors": ["pjsip", "pjsip$PRODUCT$pjproject"]}