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SCA: security update for github.com/sigstore/fulcio (GHSA-59jp-pj84-45mr)

medium Tenable Self-Hosted Container Security Plugin ID 436711

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC)
 identity. Prior to 1.8.5, Fulcio's metaRegex() function uses unanchored regex, allowing attackers to
 bypass MetaIssuer URL validation and trigger SSRF to arbitrary internal services. Since the SSRF only can
 trigger GET requests, the request cannot mutate state. The response from the GET request is not returned
 to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal
 network through Blind SSRF. This vulnerability is fixed in 1.8.5. (CVE-2026-22772)

See Also

https://github.com/advisories/GHSA-59jp-pj84-45mr

Plugin Details

Severity: Medium

ID: 436711

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 1/13/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2026-22772

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/13/2026

Vulnerability Publication Date: 1/12/2026

Reference Information

CVE: CVE-2026-22772

cwe: CWE-918