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CVE-2017-18026

27
FAUCET Score

CVE-2017-18026 describes a remote command execution vulnerability in Redmine versions prior to 3.2.9, 3.3.6, and 3.4.4, specifically affecting its Mercurial adapter. Attackers can exploit this by crafting a Mercurial branch name starting with "--config=" or "--debugger=", which Redmine fails to properly sanitize, leading to arbitrary command execution. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.9CPE matchmatch criteria
cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.6CPE matchmatch criteria
cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*
>= 3.4.0, < 3.4.4CPE matchmatch criteria
cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.83%
Probability of exploitation in next 30 days
EPSS Percentile
85.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0283 is in the 85th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / redmine/redmine/commit/58ed8655136ff2fe5ff7796859bf6a399c76c678
PatchThird Party Advisory
github.com / redmine/redmine/commit/9d797400eaec5f9fa7ba9507c82d9c18cb91d02e
PatchThird Party Advisory
github.com / redmine/redmine/commit/ca87bf766cdc70179cb2dce03015d78ec9c13ebd
PatchThird Party Advisory
debian.org / security/2018/dsa-4191
Third Party Advisory
redmine.org / issues/27516
Permissions Required
redmine.org / projects/redmine/wiki/Security_Advisories
Vendor Advisory