What’s Vulnerable › Vulnerabilities

CVE-2022-26499

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-15 · updated 2026-06-17
• Weakness: CWE-918

Description

An SSRF issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it's possible to send arbitrary requests (such as GET) to interfaces such as localhost by using the Identity header. This is fixed in 16.25.2, 18.11.2, and 19.3.2.

Affected products

• Debian Linux: 10.0, 11.0
• Digium Asterisk: from 16.15.0 through 16.25.1; from 18.0 before 18.11.2; from 19.0.0 through 19.3.1 — fixed in 18.11.2

How to fix

Upgrade to a fixed version: Digium Asterisk 18.11.2. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/166745/Asterisk-Project-Security-Advisory-AST-2022-002.html
• https://downloads.asterisk.org/pub/security/
• https://downloads.asterisk.org/pub/security/AST-2022-002.html
• https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
• https://www.debian.org/security/2022/dsa-5285
• http://packetstormsecurity.com/files/166745/Asterisk-Project-Security-Advisory-AST-2022-002.html
• https://downloads.asterisk.org/pub/security/
• https://downloads.asterisk.org/pub/security/AST-2022-002.html
• https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
• https://www.debian.org/security/2022/dsa-5285

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