BINGOS Archive::Tar up to 3.07 on Perl File Extraction _make_special_file link following

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in BINGOS Archive::Tar up to 3.07 on Perl. Affected by this issue is the function _make_special_file of the component File Extraction Handler. The manipulation leads to link following. This vulnerability is uniquely identified as CVE-2026-42496. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in BINGOS Archive::Tar up to 3.07 on Perl. It has been rated as critical. This issue affects the function _make_special_file of the component File Extraction Handler. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. _make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target. A subsequent open through the extracted name reads or writes the attacker chosen path.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-42496 since 04/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 316868 (Linux Distros Unpatched Vulnerability : CVE-2026-42496), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.08 eliminates this vulnerability. Applying the patch 17c873492a05eddc0de18c1485e0b2cccd5a9158 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-5383), Tenable (316868) and EUVD (EUVD-2026-31774). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔒

ADP CISA Base Score: 9.1
ADP CISA Vector: 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 316868
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-42496

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Archive::Tar 3.08
Patch: 17c873492a05eddc0de18c1485e0b2cccd5a9158

Timelineinfo

04/27/2026 CVE reserved
05/26/2026 +29 days Advisory disclosed
05/26/2026 +0 days VulDB entry created
06/01/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: 17c873492a05eddc0de18c1485e0b2cccd5a9158
Status: Confirmed

CVE: CVE-2026-42496 (🔒)
GCVE (CVE): GCVE-0-2026-42496
GCVE (VulDB): GCVE-100-365597
EUVD: 🔒
CNNVD: CNNVD-202605-5383 - Pear Archive_Tar 安全漏洞

Entryinfo

Created: 05/26/2026 07:08
Updated: 06/01/2026 12:46
Changes: 05/26/2026 07:08 (61), 05/26/2026 16:53 (1), 05/27/2026 14:03 (2), 05/28/2026 02:45 (6), 06/01/2026 12:46 (20)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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