TIMLEGGE Crypt::NaCl::Sodium up to 2.001 on Perl Sodium.xs STRLEN integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in TIMLEGGE Crypt::NaCl::Sodium up to 2.001 on Perl and classified as critical. This affects the function STRLEN of the file Sodium.xs. This manipulation causes integer overflow. This vulnerability is handled as CVE-2026-2588. The attack can be initiated remotely. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in TIMLEGGE Crypt::NaCl::Sodium up to 2.001 on Perl. It has been declared as critical. Affected by this vulnerability is the function STRLEN of the file Sodium.xs. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Crypt::NaCl::Sodium versions through 2.001 for Perl has an integer overflow flaw on 32-bit systems. Sodium.xs casts a STRLEN (size_t) to unsigned long long when passing a length pointer to libsodium functions. On 32-bit systems size_t is typically 32-bits while an unsigned long long is at least 64-bits.

The weakness was released by Timothy Legge. It is possible to read the advisory at metacpan.org. This vulnerability is known as CVE-2026-2588 since 02/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 557388bdb4da416a56663cda0154b80cd524395c is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202602-3951). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

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

ADP CISA Base Score: 9.1
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 557388bdb4da416a56663cda0154b80cd524395c

Timelineinfo

02/16/2026 CVE reserved
02/23/2026 +7 days Advisory disclosed
02/23/2026 +0 days VulDB entry created
03/04/2026 +9 days VulDB entry last update

Sourcesinfo

Advisory: metacpan.org
Researcher: Timothy Legge
Status: Confirmed

CVE: CVE-2026-2588 (🔒)
GCVE (CVE): GCVE-0-2026-2588
GCVE (VulDB): GCVE-100-347371
CNNVD: CNNVD-202602-3951 - Crypt::NaCl::Sodium 安全漏洞

Entryinfo

Created: 02/23/2026 07:48
Updated: 03/04/2026 03:44
Changes: 02/23/2026 07:48 (58), 02/27/2026 11:42 (6), 03/04/2026 03:44 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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