monkey f37e984 HTTP POST mk_http_parser.c http_parser_transfer_encoding_chunked out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in monkey f37e984. This affects the function http_parser_transfer_encoding_chunked of the file mk_server/mk_http_parser.c of the component HTTP POST Handler. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2025-63649. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in monkey f37e984 and classified as problematic. This vulnerability affects the function http_parser_transfer_encoding_chunked of the file mk_server/mk_http_parser.c of the component HTTP POST Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. CVE summarizes:

An out-of-bounds read in the http_parser_transfer_encoding_chunked function (mk_server/mk_http_parser.c) of monkey commit f37e984 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the server.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-63649 since 10/27/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

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 vulnerability database at EUVD (EUVD-2025-206530). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/27/2025 CVE reserved
01/30/2026 +95 days Advisory disclosed
01/30/2026 +0 days VulDB entry created
02/19/2026 +20 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 426
Status: Confirmed

CVE: CVE-2025-63649 (🔒)
GCVE (CVE): GCVE-0-2025-63649
GCVE (VulDB): GCVE-100-343444
EUVD: 🔒

Entryinfo

Created: 01/30/2026 08:01
Updated: 02/19/2026 22:54
Changes: 01/30/2026 08:01 (55), 01/30/2026 14:40 (1), 02/19/2026 22:54 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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