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CVE-2018-13348

23
FAUCET Score

CVE-2018-13348 describes a vulnerability in Mercurial versions prior to 4.6.1, specifically within the mpatch_decode function, where it fails to properly handle insufficient remaining patch data. This flaw carries a CVSS v3 score of 7.5 (HIGH), indicating a network-exploitable vulnerability with low attack complexity that could lead to high integrity impact, though confidentiality and availability are not affected. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.6.1CPE matchmatch criteria
cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 64th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: mercurialFixed in: 4.6.1

Vendor Advisories (2)

pipGHSA-3v62-ww8w-758mhigh

Mercurial Improper Input Validation vulnerability

May 13, 2022
redhatCVE-2018-13348Moderate

mercurial: Improper length check in mpatch.c

Jun 6, 2018

References

lists.debian.org / debian-lts-announce/2020/07/msg00032.html
mercurial-scm.org / repo/hg/rev/90a274965de7
PatchVendor Advisory
mercurial-scm.org / wiki/WhatsNew
Vendor Advisory