cmark-gfm up to 0.29.0.gfm.10 resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in cmark-gfm and classified as problematic. This impacts an unknown function. Such manipulation leads to resource consumption. This vulnerability is documented as CVE-2023-37463. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in cmark-gfm. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.

The weakness was released 07/13/2023 as GHSA-w4qg-3vf7-m9x5. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-37463 since 07/06/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 276208 (TencentOS Server 4: python-cmarkgfm (TSSA-2025:0086)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.29.0.gfm.12 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (276208). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 6.4
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
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: 276208
Nessus Name: TencentOS Server 4: python-cmarkgfm (TSSA-2025:0086)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cmark-gfm 0.29.0.gfm.12

Timelineinfo

07/06/2023 🔍
07/13/2023 +7 days 🔍
07/13/2023 +0 days 🔍
11/24/2025 +865 days 🔍

Sourcesinfo

Advisory: GHSA-w4qg-3vf7-m9x5
Status: Confirmed

CVE: CVE-2023-37463 (🔍)
GCVE (CVE): GCVE-0-2023-37463
GCVE (VulDB): GCVE-100-234056

Entryinfo

Created: 07/13/2023 22:44
Updated: 11/24/2025 06:38
Changes: 07/13/2023 22:44 (49), 08/05/2023 13:04 (11), 11/24/2025 06:38 (18)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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