CVE-2018-1000132

Mercurial version 4.5 and earlier contains a Incorrect Access Control (CWE-285) vulnerability in Protocol server that can result in Unauthorized data access. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 4.5.1.

Published: 2018-03-14 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1000132 is rated High Risk (67.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.69%). EPSS rose +2.09% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-1000132

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.60% 2.69% +2.09%
2 2026-04-13 0.78% 0.60% -0.18%
3 2025-12-16 — 0.78% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1000132

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2018-1000132

GitHub Security Advisory for CVE-2018-1000132

GHSA-4mr4-7vjv-9hm6 · Severity: critical · Ecosystem: pip — Mercurial Incorrect Access Control vulnerability

OS Trackers for CVE-2018-1000132

vendor priority summary link
debian not yet assigned CVE-2018-1000132 not yet assigned priority: Debian including 1 source packages (mercurial), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-1000132
redhat medium — https://access.redhat.com/security/cve/CVE-2018-1000132
suse medium CVE-2018-1000132 severity moderate: SUSE including 16 source package names (emacs-mercurial-2.6.2-10.el7, emacs-mercurial-el-2.6.2-10.el7, …), 31 product×package rows across 25 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (25 product lines)): Fixed 17, Known Not Affected 14. https://www.suse.com/security/cve/CVE-2018-1000132/
ubuntu medium CVE-2018-1000132 medium priority: Ubuntu including 1 source packages (mercurial), 6 status rows across 6 suites (artful, bionic, cosmic, trusty, upstream, xenial): not-affected 2, released 2, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2018-1000132

Affected software / configurations for CVE-2018-1000132

Vendor Product Version Raw CPE
mercurial mercurial < 4.5.1 cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2018-1000132

cvelogic Threat Intelligence