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CVE-2018-12557

29
FAUCET Score

CVE-2018-12557 is a critical vulnerability affecting Zuul 3.x before version 3.1.0, where the "no_log" attribute is ignored if nodes go offline during a build, potentially exposing sensitive data like credentials when tasks with loop variables encounter unreachable errors. With a CVSS score of 9.8, this network-exploitable vulnerability requires no user interaction and can lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 3.1.0CPE matchmatch criteria
cpe:2.3:a:zuul-ci:zuul:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.85%
Probability of exploitation in next 30 days
EPSS Percentile
76.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0185 is in the 65th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.zuul-ci.org / pipermail/zuul-announce/2018-June/000015.html
Mailing ListVendor Advisory
git.zuul-ci.org / cgit/zuul/commit
PatchVendor Advisory
storyboard.openstack.org