VDB-310579 · CVE-2020-36846 · GHSA-5v8v-66v8-mwm7

TIMLEGGE IO::Compress::Brotli up to 0.006 Brotli Library vulnerable third-party component

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in TIMLEGGE IO::Compress::Brotli up to 0.006 and classified as problematic. Impacted is an unknown function of the component Brotli Library. This manipulation causes vulnerable third-party component. The identification of this vulnerability is CVE-2020-36846. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in TIMLEGGE IO::Compress::Brotli up to 0.006. It has been declared as problematic. Affected by this vulnerability is an unknown part of the component Brotli Library. The manipulation with an unknown input leads to a vulnerable third-party component vulnerability. The CWE definition for the vulnerability is CWE-1395. The product has a dependency on a third-party component that contains one or more known vulnerabilities. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A buffer overflow, as described in CVE-2020-8927, exists in the embedded Brotli library. Versions of IO::Compress::Brotli prior to 0.007 included a version of the brotli library prior to version 1.0.8, where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your IO::Compress::Brotli module to 0.007 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2020-36846 since 05/28/2025. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 0.007 eliminates this vulnerability. Applying the patch 223d80cfbec8fd346e32906c732c8ede21f0cea6 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.

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

Productinfo

Vendor

TIMLEGGE

Name

IO::Compress::Brotli

Version

0.006

License

open-source

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Vulnerable third-party component
CWE: CWE-1395
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: IO::Compress::Brotli 0.007
Patch: 223d80cfbec8fd346e32906c732c8ede21f0cea6

Timelineinfo

05/28/2025 🔍
05/30/2025 +2 days 🔍
05/30/2025 +0 days 🔍
05/31/2025 +1 days 🔍

Sourcesinfo

Advisory: GHSA-5v8v-66v8-mwm7
Status: Confirmed

CVE: CVE-2020-36846 (🔍)
GCVE (CVE): GCVE-0-2020-36846
GCVE (VulDB): GCVE-100-310579

Entryinfo

Created: 05/30/2025 05:48
Updated: 05/31/2025 06:57
Changes: 05/30/2025 05:48 (57), 05/31/2025 06:57 (1)
Complete: 🔍
Cache ID: 216::103