VDB-319228 · Submit #622285 · CVE-2025-8732

libxml2 up to 2.14.5 xmlcatalog xmlParseSGMLCatalog recursion ⚔ [Disputed]

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.2	$0-$5k	0.34

Summaryinfo

A vulnerability classified as problematic was found in libxml2 up to 2.14.5. This affects the function xmlParseSGMLCatalog of the component xmlcatalog. Executing a manipulation can lead to recursion. This vulnerability appears as CVE-2025-8732. The attack requires local access. In addition, an exploit is available. It is still unclear if this vulnerability genuinely exists. The code maintainer explains, that "[t]he issue can only be triggered with untrusted SGML catalogs and it makes absolutely no sense to use untrusted catalogs. I also doubt that anyone is still using SGML catalogs at all."

Detailsinfo

A vulnerability was found in libxml2 up to 2.14.5. It has been declared as problematic. This vulnerability affects the function xmlParseSGMLCatalog of the component xmlcatalog. The manipulation with an unknown input leads to a recursion vulnerability. The CWE definition for the vulnerability is CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. As an impact it is known to affect availability.

The advisory is shared for download at gitlab.gnome.org. This vulnerability was named CVE-2025-8732. The exploitation appears to be easy. The attack needs to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at drive.google.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains, that "[t]he issue can only be triggered with untrusted SGML catalogs and it makes absolutely no sense to use untrusted catalogs. I also doubt that anyone is still using SGML catalogs at all." The vulnerability scanner Nessus provides a plugin with the ID 253547 (Linux Distros Unpatched Vulnerability : CVE-2025-8732), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (253547) and EUVD (EUVD-2025-24001). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Document Processing Software

Name

libxml2

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.3
CNA Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Recursion
CWE: CWE-674 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 253547
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-8732

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/08/2025 Advisory disclosed
08/08/2025 +0 days VulDB entry created
08/23/2025 +15 days VulDB entry last update

Sourcesinfo

Advisory: 958
Status: Confirmed
Confirmation: 🔒
Disputed: 🔍

CVE: CVE-2025-8732 (🔒)
GCVE (CVE): GCVE-0-2025-8732
GCVE (VulDB): GCVE-100-319228
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/08/2025 09:55
Updated: 08/23/2025 23:03
Changes: 08/08/2025 09:55 (59), 08/09/2025 02:56 (29), 08/09/2025 16:41 (1), 08/23/2025 23:03 (2)
Complete: 🔍
Cache ID: 216::103

Submitinfo

Accepted

Submit #622285: LibXML2 xmlcatalog the newest master stack overflow (by gitlab.gnome.org)