CVE-2026-12566
SSRF via unvalidated WWW-Authenticate realm in docker_pull module
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
SSRF via unvalidated WWW-Authenticate realm in docker_pull module
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.
- Record
CVE-2026-12566- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-918
- Updated
- 2026-11-02
EUVDEUVD-2026-37814
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.
- Record
EUVD-2026-37814- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3mp7-vp6j-2mxx
BBOT: Server-Side Request Forgery (SSRF) in docker_pull module via WWW-Authenticate realm parsing
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.
- Record
GHSA-3mp7-vp6j-2mxx- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-20, CWE-918
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-12566- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-918
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2026-12566- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-3mp7-vp6j-2mxx
BBOT: Server-Side Request Forgery (SSRF) in docker_pull module via WWW-Authenticate realm parsing
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.
- Record
GHSA-3mp7-vp6j-2mxx- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-20, CWE-918
- Updated
- 2026-11-02
OSVPYSEC-2026-2391
BBOT: Server-Side Request Forgery (SSRF) in docker_pull module via WWW-Authenticate realm parsing
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.
- Record
PYSEC-2026-2391- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
bbotPyPI |
2.0.0 to 2.8.4 | 2.8.5 |
bbotPyPI |
2.0.0 up to 2.8.5, plus listed versions 2.0.0.4250rc02.0.0.4372rc02.0.0.4378rc02.0.0.4380rc02.0.0.4398rc0 Show 45 moreShow less2.0.0.4400rc02.0.0.4434rc02.0.0.4460rc02.0.0.4478rc02.0.0.4494rc02.0.0.4515rc02.0.0.4524rc02.0.0.4535rc02.0.0.4538rc02.0.0.4569rc02.0.0.4575rc02.0.0.4580rc02.0.0.4582rc02.0.0.4585rc02.0.0.4588rc02.0.0.4591rc02.0.0.4603rc02.0.0.4606rc02.0.0.4610rc02.0.12.0.1.4638rc02.0.1.4642rc02.0.1.4648rc02.0.1.4650rc02.0.1.4654rc02.0.1.4657rc02.0.1.4660rc02.0.1.4675rc02.0.1.4685rc02.0.1.4705rc02.0.1.4709rc02.0.1.4716rc02.0.1.4720rc02.0.1.4722rc02.0.1.4730rc02.0.1.4732rc02.0.1.4745rc02.0.1.4750rc02.0.1.4756rc02.0.1.4760rc02.0.1.4762rc02.0.1.4764rc02.0.1.4774rc02.0.1.4777rc02.0.1.4779rc0 |
2.8.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-12566 is a low vulnerability (CVSS 3.1) in Black Lantern Security Bbot, published June 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 5th percentile. Fixed in bbot 2.8.5.
References
Left out here: 336 versions. The JSON record has them.