# CVE-2026-22772: cosign: github.com/sigstore/fulcio: bypass MetaIssuer URL validation bypass can trigger SSRF to arbitrary

CVE-2026-22772 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2026-22772, released January 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-22772
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 12, 2026

## Description

github.com/sigstore/fulcio: bypass MetaIssuer URL validation bypass can trigger SSRF to arbitrary

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cosign opensuse-leap 15.6 | 3.0.5-150400.3.35.1 | [SUSE-SU-2026:0777-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0777-1.md) | Mar 3, 2026 |
| Linux | cosign opensuse-leap 16.0 | 3.0.5-160000.1.1 | [OPENSUSE-SU-2026:20386-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20386-1.md) | Mar 18, 2026 |
| Linux | cosign sles 15.7 | 3.0.5-150400.3.35.1 | [SUSE-SU-2026:0777-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0777-1.md) | Mar 3, 2026 |
| Linux | cosign sles 16.0 | 3.0.5-160000.1.1 | [SUSE-SU-2026:20904-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20904-1.md) | Mar 18, 2026 |
| Linux | golang-github-sigstore-fulcio Debian 14 | 1.8.5-1 | [DEBIAN-CVE-2026-22772](https://patchblox.com/security/data/fix/linux/debian-cve-2026-22772.md) | Jan 12, 2026 |
| Linux | govulncheck-vulndb opensuse-leap 15.6 | 0.0.20260123T022811-150000.1.140.1 | [SUSE-SU-2026:0292-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0292-1.md) | Jan 26, 2026 |
| Linux | govulncheck-vulndb opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | [OPENSUSE-SU-2026:21483-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21483-1.md) | Jul 30, 2026 |
| Linux | hauler opensuse-leap 16.0 | 1.4.1-bp160.1.1 | [OPENSUSE-RU-2026:20161-1](https://patchblox.com/security/data/fix/linux/opensuse-ru-2026-20161-1.md) | Jan 27, 2026 |
| Linux | runfinch-finch amzn 2023 | 1.15.1-1.amzn2023.0.1 | [ALAS2023-2026-1507](https://patchblox.com/security/data/fix/linux/alas2023-2026-1507.md) | Mar 30, 2026 |
| Linux | vexctl opensuse-leap 15.6 | 0.4.1+git78.f951e3a-150000.1.11.1 | [SUSE-SU-2026:0592-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0592-1.md) | Feb 20, 2026 |
| Linux | vexctl opensuse-leap 16.0 | 0.4.4+git20.5d61136-160000.1.1 | [OPENSUSE-SU-2026:21481-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21481-1.md) | Jul 30, 2026 |

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Data as of 2026-11-11T07:45:43Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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