CVE-2026-57161

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Source

https://cve.org/CVERecord?id=CVE-2026-57161

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57161.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-57161

Aliases

GHSA-xc62-j9h2-mp84

Downstream

DEBIAN-CVE-2026-57161

Published

2026-09-04T17:11:33.488Z

Modified

2026-09-06T08:14:56.465670Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

PJSIP: Stack overflow handling Service-Route headers in a registration response

Details

PJSIP is a free and open source multimedia communication library written in C. Prior to commit acc03b5, a stack buffer overflow exists in PJSUA when processing Service-Route headers in a registration response (updateserviceroute() in pjsua_acc.c). This affects applications that register using the PJSUA/PJSUA2 account API (the default registration path). The Service-Route URIs from a 2xx response to REGISTER are stored into a fixed-size array without bounding the number of headers; a registrar that returns an excessive number of Service-Route headers can write past the end of the array on the stack. The values written are internal pointers rather than arbitrary data, so the most likely impact is unexpected application termination (denial of service), though memory corruption cannot be excluded. The malicious response may come from a compromised or malicious registrar, or — over unprotected transports — a spoofed response. This issue has been patched via commit acc03b5.

Database specific

{
    "cwe_ids": [
        "CWE-121"
    ],
    "cna_assigner": "GitHub_M",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "acc03b57cef7a7d31b8e1f5b9117437d7e87c591"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57161.json"
}

References

Affected packages

Git / github.com/pjsip/pjproject

Affected ranges

Type

GIT

Repo

https://github.com/pjsip/pjproject

Events

Introduced

Fixed

acc03b57cef7a7d31b8e1f5b9117437d7e87c591

Database specific

Show details

{
    "source": "REFERENCES"
}

Affected versions

2.*

2.10

2.11

2.12

2.13

2.14

2.15

2.16

2.17

Database specific

vanir_signatures

[
    {
        "target": {
            "file": "pjsip/src/pjsua-lib/pjsua_acc.c",
            "function": "update_service_route"
        },
        "deprecated": false,
        "id": "CVE-2026-57161-991adea8",
        "signature_version": "v1",
        "digest": {
            "function_hash": "231092572113432386254224372783085568014",
            "length": 2076.0
        },
        "signature_type": "Function",
        "source": "https://github.com/pjsip/pjproject/commit/acc03b57cef7a7d31b8e1f5b9117437d7e87c591"
    },
    {
        "target": {
            "file": "pjsip/src/pjsua-lib/pjsua_acc.c"
        },
        "deprecated": false,
        "id": "CVE-2026-57161-dd434ac6",
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "195085791941282295658134388069475402224",
                "189875619073264633970969239108096599411",
                "255929625464236592835179354163788890654",
                "89758809914378715682471127206372329439",
                "18039153693145687670257955616250892977",
                "323169140021135744574294113640115731074",
                "216808286038063834065218396969384191988",
                "25375236710895406912662060593624994229",
                "8940688792440521517011441780371941922",
                "34712855523357717426345223882675683475"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/pjsip/pjproject/commit/acc03b57cef7a7d31b8e1f5b9117437d7e87c591"
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57161.json"

vanir_signatures_modified

"2026-09-06T08:14:56Z"