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CVE-2026-32946

16
FAUCET Score

CVE-2026-32946 affects Harden-Runner versions 2.15.1 and below, a CI/CD security agent for GitHub Actions. This vulnerability allows an attacker with existing code execution capabilities within a GitHub Actions workflow to bypass configured egress network restrictions using DNS queries over TCP. Rated with a CVSS score of 2.7 (Low), its primary impact is enabling low confidentiality compromise through data exfiltration, circumventing intended security policies. There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this issue.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.16.0CPE matchmatch criteria
cpe:2.3:a:stepsecurity:harden-runner:*:*:*:*:community:*:*:*

CVSS Data

CVSS version used by this source: 4.0

4.6MEDIUM

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 25th percentile among its peer group of 709 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

actionspatch availablevia ghsa
Product: step-security/harden-runnerFixed in: 2.16.0
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

actionsGHSA-g699-3x6g-wm3gmedium

Egress Policy Bypass via DNS over TCP in Harden-Runner (Community Tier)

Mar 17, 2026

References

github.com / step-security/harden-runner/releases/tag/v2.16.0
ProductRelease Notes
github.com / step-security/harden-runner/security/advisories/GHSA-g699-3x6g-wm3g
Vendor Advisory