Plexus Archiver vulnerable to Arbitrary File Creation in AbstractUnArchiver
Plexis Archiver is a collection of Plexus components to create archives or extract archives to a directory with a unified `Archiver`/`UnArchiver` API. Prior to version 4.8.0, using AbstractUnArchiver for extracting an archive might lead to an arbitrary file creation and possibly remote code execution. When extracting an archive with an entry that already exists in the destination directory as a symbolic link whose target does not exist - the `resolveFile()` function will return the symlink's source instead of its target, which will pass the verification that ensures the file will not be extracted outside of the destination directory. Later `Files.newOutputStream()`, that follows symlinks by default, will actually write the entry's content to the symlink's target. Whoever uses plexus archiver to extract an untrusted archive is vulnerable to an arbitrary file creation and possibly remote code execution. Version 4.8.0 contains a patch for this issue.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Jul 25, 2023
- Updated
- Jun 17, 2026
- EPSS
- 2.5% · 84th percentile
- CWE
- CWE-22
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Report tools
Action score
40
Plan
Add it to your regular patch cycle.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.5%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 9.8
- CNA · GitHub_M
- 8.1
- 1.7 point gap
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| codehaus-plexus | plexus-archiver | cpe:2.3:a:codehaus-plexus:plexus-archiver |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- codehaus-plexus plexus-archiverbefore 4.8.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.
codehaus-plexus plexus-archiver
- < 4.8.0affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Maven | org.codehaus.plexus:plexus-archiver | before 4.8.0 | 4.8.0 |
| openSUSE:Leap 15.5 | maven-assembly-plugin | before 3.6.0-150200.3.7.2 | 3.6.0-150200.3.7.2 |
| openSUSE:Leap 15.5 | maven-compiler-plugin-bootstrap | before 3.11.0-150200.3.7.1 | 3.11.0-150200.3.7.1 |
| openSUSE:Leap 15.5 | maven-dependency-analyzer | before 1.13.2-150200.3.7.2 | 1.13.2-150200.3.7.2 |
| openSUSE:Leap 15.5 | maven-dependency-plugin | before 3.6.0-150200.3.7.2 | 3.6.0-150200.3.7.2 |
| openSUSE:Leap 15.5 | maven-dependency-tree | before 3.2.1-150200.3.7.2 | 3.2.1-150200.3.7.2 |
| openSUSE:Leap 15.5 | maven-enforcer | before 3.4.1-150200.3.7.2 | 3.4.1-150200.3.7.2 |
| openSUSE:Leap 15.5 | maven-plugin-plugin | before 3.9.0-150200.3.7.5 | 3.9.0-150200.3.7.5 |
| openSUSE:Leap 15.5 | maven-plugin-plugin-bootstrap | before 3.9.0-150200.3.7.1 | 3.9.0-150200.3.7.1 |
| Red Hat:enterprise_linux:7::client | plexus-archiver | before 0:2.4.2-6.el7_9 | 0:2.4.2-6.el7_9 |
| Red Hat:enterprise_linux:7::client | plexus-archiver-javadoc | before 0:2.4.2-6.el7_9 | 0:2.4.2-6.el7_9 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | objectweb-asm | before 9.6-150200.3.11.3 | 9.6-150200.3.11.3 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP5 | objectweb-asm | before 9.6-150200.3.11.3 | 9.6-150200.3.11.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-archiver | before 3.6.1-150200.3.7.3 | 3.6.1-150200.3.7.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-archiver | before 3.6.1-150200.3.7.3 | 3.6.1-150200.3.7.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-common-artifact-filters | before 3.3.2-150200.3.7.3 | 3.3.2-150200.3.7.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-common-artifact-filters | before 3.3.2-150200.3.7.3 | 3.3.2-150200.3.7.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-compiler-plugin | before 3.11.0-150200.3.7.1 | 3.11.0-150200.3.7.1 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-compiler-plugin | before 3.11.0-150200.3.7.1 | 3.11.0-150200.3.7.1 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-plugin-tools | before 3.9.0-150200.3.7.3 | 3.9.0-150200.3.7.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | maven-plugin-tools | before 3.9.0-150200.3.7.3 | 3.9.0-150200.3.7.3 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | plexus-archiver | before 4.8.0-150200.3.7.2 | 4.8.0-150200.3.7.2 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | plexus-archiver | before 4.8.0-150200.3.7.2 | 4.8.0-150200.3.7.2 |
| SUSE:Linux Enterprise Module for Development Tools 15 SP5 | plexus-compiler | before 2.14.2-150200.3.9.2 | 2.14.2-150200.3.9.2 |
+1
Same product
codehaus-plexus: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-1002200plexus-archiver before 3.6.0 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash) 25Monitor
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 |
|---|---|---|
| Maven:org.codehaus.plexus:plexus-archiver | 4.8.0 | Package registry (OSV) |
| opensuse:maven-archiver | 3.6.1-150200.3.7.3 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:maven-assembly-plugin | 3.6.0-150200.3.7.2 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:maven-common-artifact-filters | 3.3.2-150200.3.7.3 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:maven-compiler-plugin | 3.11.0-150200.3.7.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:maven-compiler-plugin-bootstrap | 3.11.0-150200.3.7.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| red hat:plexus-archiver | 0:2.4.2-6.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:plexus-archiver-javadoc | 0:2.4.2-6.el7_9 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:maven-archiver | 3.6.1-150200.3.7.3 · SUSE:Linux Enterprise Module for Development Tools 15 SP5 | Package registry (OSV) |
| suse:maven-common-artifact-filters | 3.3.2-150200.3.7.3 · SUSE:Linux Enterprise Module for Development Tools 15 SP5 | Package registry (OSV) |
| suse:maven-compiler-plugin | 3.11.0-150200.3.7.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP5 | Package registry (OSV) |
| suse:maven-plugin-tools | 3.9.0-150200.3.7.3 · SUSE:Linux Enterprise Module for Development Tools 15 SP5 | Package registry (OSV) |
| suse:objectweb-asm | 9.6-150200.3.11.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP5 | Package registry (OSV) |
| suse:plexus-archiver | 4.8.0-150200.3.7.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP5 | Package registry (OSV) |
| suse:plexus-compiler | 2.14.2-150200.3.9.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP5 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×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 |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2025-08-17 |
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.
- Published
- First PoC+753 d
- TodaySep 30, 2026+1163 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-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Root cause
A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.
The bug in code
The whole CWE-22 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
const file = path.join(ROOT, req.query.name);res.sendFile(file);Fixed
const file = path.resolve(ROOT, req.query.name);if (!file.startsWith(ROOT + path.sep)) { return res.sendStatus(400);}res.sendFile(file);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)
- Path TraversalCAPEC-126likelihood: High · Very High
- Using Slashes and URL Encoding Combined to Bypass Validation LogicCAPEC-64likelihood: High · High
- Manipulating Web Input to File System CallsCAPEC-76likelihood: High · Very High
- Using Escaped Slashes in Alternate EncodingCAPEC-78likelihood: High · High
- Using Slashes in Alternate EncodingCAPEC-79likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- github.com/codehaus-plexus/plexus-archiver/commit/54759839fbdf85caf8442076f001d5fd64e0dcb2
- github.com/codehaus-plexus/plexus-archiver/releases/tag/plexus-archiver-4.8.0
Vendor advisories and official records. Exploit/PoC links are deliberately left out.