Git before 1.8.5.6, 1.9.x before 1.9.5, 2.0.x before 2.0.5, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 on Windows and OS X; Mercurial before
Git before 1.8.5.6, 1.9.x before 1.9.5, 2.0.x before 2.0.5, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 on Windows and OS X; Mercurial before 3.2.3 on Windows and OS X; Apple Xcode before 6.2 beta 3; mine all versions before 08-12-2014; libgit2 all versions up to 0.21.2; Egit all versions before 08-12-2014; and JGit all versions before 08-12-2014 allow remote Git servers to execute arbitrary commands via a tree containing a crafted .git/config file with (1) an ignorable Unicode codepoint, (2) a git~1/config representation, or (3) mixed case that is improperly handled on a case-insensitive filesystem.
- Published
- Feb 11, 2020
- Updated
- Jun 16, 2026
- EPSS
- 75.6% · 100th percentile
- CWE
- CWE-20
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Report tools
Action score
62
This week
Don’t wait for the next maintenance window.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 23 / 30 · 75.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| mercurial | mercurial | cpe:2.3:a:mercurial:mercurial |
| git-scm | git | cpe:2.3:a:git-scm:git |
| apple | mac os x | cpe:2.3:o:apple:mac_os_x |
| microsoft | windows | cpe:2.3:o:microsoft:windows |
| apple | xcode | cpe:2.3:a:apple:xcode |
| eclipse | egit | cpe:2.3:a:eclipse:egit |
| eclipse | jgit | cpe:2.3:a:eclipse:jgit |
| libgit2 | libgit2 | cpe:2.3:a:libgit2:libgit2 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apple xcodeup to 6.1.1 inclusive
- apple xcode6.2
- eclipse egitbefore 08-12-2014
- eclipse jgit3.5.0 and later · before 3.5.3
- eclipse jgitbefore 3.4.2
- git-scm gitbefore 1.8.5.6
- git-scm git1.9.0 and later · before 1.9.5
- git-scm git2.0.0 and later · before 2.0.5
- git-scm git2.1.0 and later · before 2.1.4
- git-scm git2.2.0 and later · before 2.2.1
- libgit2 libgit2before 0.21.3
- mercurial mercurialbefore 3.2.3
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | dulwich | before 0.10.1-1 | 0.10.1-1 |
| Debian:12 | git | before 1:2.1.4-1 | 1:2.1.4-1 |
| Debian:12 | jgit | before 3.7.0-1 | 3.7.0-1 |
| Debian:12 | libgit2 | before 0.21.3-1 | 0.21.3-1 |
| Debian:12 | mercurial | before 3.1.2-2 | 3.1.2-2 |
| Debian:6.0 | mercurial | before 1.6.4-1+deb6u1 | 1.6.4-1+deb6u1 |
| Maven | org.eclipse.jgit:org.eclipse.jgit | before 3.5.3 | 3.5.3 |
| openSUSE:Tumbleweed | git | before 2.11.0-1.1 | 2.11.0-1.1 |
| PyPI | mercurial | before 3.2.3 | 3.2.3 |
| PyPI | mercurial | before 3.2.3 | 3.2.3 |
Same product
mercurial: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-9462In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and consequently execute arbi42Plan
- CVE-2017-17458In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the f41Plan
- CVE-2017-1000116Mercurial prior to 4.3 did not adequately sanitize hostnames passed to ssh, leading to possible shell-injection attacks.41Plan
- CVE-2018-13347mpatch.c in Mercurial before 4.6.1 mishandles integer addition and subtraction, aka OVE-20180430-0002.40Plan
- CVE-2018-17983cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.37Monitor
- CVE-2018-1000132Mercurial version 4.5 and earlier contains a Incorrect Access Control (CWE-285) vulnerability in Protocol server that can result in Unauthor37Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:dulwich | 0.10.1-1 · Debian:12 | Package registry (OSV) |
| debian:git | 1:2.1.4-1 · Debian:12 | Package registry (OSV) |
| debian:jgit | 3.7.0-1 · Debian:12 | Package registry (OSV) |
| debian:libgit2 | 0.21.3-1 · Debian:12 | Package registry (OSV) |
| debian:mercurial | 3.1.2-2 · Debian:12 | Package registry (OSV) |
| Maven:org.eclipse.jgit:org.eclipse.jgit | 3.5.3 | Package registry (OSV) |
| opensuse:git | 2.11.0-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| PyPI:mercurial | 3.2.3 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Metasploit module | exploit/multi/http/git_client_command_execMalicious Git and Mercurial HTTP Server For CVE-2014-9390exploit | 2014-12-18 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-1882 d
- Published
- TodaySep 30, 2026+2423 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- article.gmane.org/gmane.linux.kernel/1853266
- git-blame.blogspot.com/2014/12/git-1856-195-205-214-and-221-and.html
- mercurial.selenic.com/wiki/WhatsNew
- securitytracker.com/id?1031404
- support.apple.com/kb/HT204147
- github.com/blog/1938-git-client-vulnerability-announced
- github.com/libgit2/libgit2/commit/928429c5c96a701bcbcafacb2421a82602b36915
- libgit2.org/security/
- news.ycombinator.com/item?id=8769667
Vendor advisories and official records. Exploit/PoC links are deliberately left out.