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CVE-2023-43741

20
FAUCET Score

CVE-2023-43741 is a time-of-check-time-of-use (TOCTOU) race condition vulnerability affecting Buildkite Elastic CI for AWS versions prior to 6.7.1 and 5.22.5. This flaw allows a low-privileged buildkite-agent user to bypass a symbolic link check, potentially leading to high impact on confidentiality, integrity, and availability. While rated as HIGH severity with a CVSS score of 7.0, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.22.5CPE matchmatch criteria
cpe:2.3:a:buildkite:elastic_ci_stack:*:*:*:*:*:aws:*:*
>= 6.0.0, < 6.7.1CPE matchmatch criteria
cpe:2.3:a:buildkite:elastic_ci_stack:*:*:*:*:*:aws:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
9.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 33rd percentile among its peer group of 1,523 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa
Product: github.com/buildkite/elastic-ci-stack-for-aws/v6Fixed in: 6.7.1

Vendor Advisories (1)

goGHSA-r5hg-349q-mg2qhigh

Buildkite Elastic CI for AWS time-of-check-time-of-use race condition vulnerability

Dec 22, 2023

References

github.com / atredispartners/advisories/blob/master/ATREDIS-2023-0003.md
ExploitThird Party Advisory