HOMEVULNERABILITIESCVE-2019-12300
CRITICAL

CVE-2019-12300

CWE-287Published: May 23, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Buildbot before 1.8.2 and 2.x before 2.3.1 accepts a user-submitted authorization token from OAuth and uses it to authenticate a user. If an attacker has a token allowing them to read the user details of a victim, they can login as the victim.

NVD Source

Technical Analysis

CVE-2019-12300 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

buildbot1 product(s)
buildbot
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/buildbot/buildbot/wiki/OAuth-vulnerability-in-using-submitted-authorization-token-for-authentication
PATCHhttps://github.com/buildbot/buildbot/wiki/OAuth-vulnerability-in-using-submitted-authorization-token-for-authentication

All References (6)

→
https://github.com/buildbot/buildbot/wiki/OAuth-vulnerability-in-using-submitted-authorization-token-for-authenticationMitigation · Patch · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLOM2K4M4723BCLHZJEX52KJXZSEVRL/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7GXKO7OYLKBTXXXKF4VPHWT7GVYWFVYA/
→
https://github.com/buildbot/buildbot/wiki/OAuth-vulnerability-in-using-submitted-authorization-token-for-authenticationMitigation · Patch · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLOM2K4M4723BCLHZJEX52KJXZSEVRL/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7GXKO7OYLKBTXXXKF4VPHWT7GVYWFVYA/

Quick Facts

CVE IDCVE-2019-12300
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-287
CISA KEVNo
Affected1 vendor(s)
PublishedMay 23, 2019

Related CVEs (CWE-287)

CVE-2026-30836
10.0
CVE-2025-44005
10.0
CVE-2025-15586
10.0
CVE-2026-23600
10.0
CVE-2026-42822
10.0
CVE-2026-42869
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-12300 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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