CVE-2026-12566 json
SSRF via unvalidated WWW-Authenticate realm in docker_pull module
published 4mo ago modified 14d ago also GHSA-3mp7-vp6j-2mxx , PYSEC-2026-2391 , EUVD-2026-37814
- cvss
- 3.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
The docker_pull module uses the realm parameter from a Docker registry's WWW-Authenticate response header as the authentication endpoint without validation. An attacker in a man-in-the-middle position between bbot and a Docker registry could modify this header to redirect the authentication request to an arbitrary endpoint, potentially leaking authentication tokens.
Patch / fix
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | bbot | >=2.0.0, <2.8.5 |
2.8.5 |
Affected products
- Black Lantern Security BBOT
Classification
References
-
github.com
/blacklanternsecurity/bbot/commit/c2f4bc0f4
web
-
github.com
/blacklanternsecurity/bbot/security/advisories/GHSA-3mp7-vp6j-2mxx
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-12566
advisory
-
github.com
/blacklanternsecurity/bbot
package
-
pypi.org
/project/bbot
package
-
github.com
/advisories/GHSA-3mp7-vp6j-2mxx
advisory
Sources
- CVE List CVE-2026-12566
- GitHub Advisory GHSA-3mp7-vp6j-2mxx
- NVD CVE-2026-12566
- OSV PYSEC-2026-2391
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