CVE-2026-40892

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Source

https://cve.org/CVERecord?id=CVE-2026-40892

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40892.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-40892

Aliases

GHSA-2wcg-w3c4-48r7

Downstream

Published

2026-04-21T19:55:26Z

Modified

2026-08-12T16:24:08Z

Severity

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

Summary

PJSIP: Stack buffer overflow in pjsip_auth_create_digest2()

Details

PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a stack buffer overflow exists in pjsip_auth_create_digest2() in PJSIP when using pre-computed digest credentials (PJSIP_CRED_DATA_DIGEST). The function copies credential data using cred_info->data.slen as the length without an upper-bound check, which can overflow the fixed-size ha1 stack buffer (128 bytes) if data.slen exceeds the expected digest string length.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-121"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40892.json"
}

References

Affected packages

Git / github.com/pjsip/pjproject

Affected ranges

Type

GIT

Repo

https://github.com/pjsip/pjproject

Events

Introduced

Fixed

5a457451fa2712ba18e12b01738e8ff3af2b26fd

Fixed

c82123ea6f3c3652bbc9ebd5e9e658c301451687

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:pjsip:pjsip:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.17"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

2.*

2.10

2.11

2.12

2.13

2.14

2.15

2.16

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40892.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "271487805372020685281929672924788739023",
                "143341940733911665328653855004538887896",
                "39470024426347641986137587022818173795",
                "143753489192855065967366424481963127456"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-40892-90d1ec2f",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/pjsip/pjproject/commit/c82123ea6f3c3652bbc9ebd5e9e658c301451687",
        "target":  {
            "file":  "pjsip/src/pjsip/sip_auth_client.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "94974654019773955036750536571538866115",
            "length":  6507
        },
        "id":  "CVE-2026-40892-c123ba4b",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/pjsip/pjproject/commit/c82123ea6f3c3652bbc9ebd5e9e658c301451687",
        "target":  {
            "file":  "pjsip/src/pjsip/sip_auth_client.c",
            "function":  "pjsip_auth_create_digest2"
        }
    }
]

vanir_signatures_modified

"2026-08-12T16:24:08Z"