VDB-422867 · Submit #1014888 · CVE-2026-113705

a2aproject a2a-rs up to 0.4.3 a2a-server/src/error.rs information exposure

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.
5.1	$0-$5k	2.30

Summaryinfo

A vulnerability marked as problematic has been reported in a2aproject a2a-rs up to 0.4.3. Impacted is an unknown function of the file a2a-server/src/error.rs. The manipulation leads to information exposure. This vulnerability is uniquely identified as CVE-2026-113705. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in a2aproject a2a-rs up to 0.4.3. This issue affects an unknown code of the file a2a-server/src/error.rs. The manipulation with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to CWE-209. The product generates an error message that includes sensitive information about its environment, users, or associated data. Impacted is confidentiality.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-113705. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Applying the patch 713b943af94ab2d521d483b841618b97a2e78a4d is able to eliminate this problem. The bugfix is ready for download at github.com.

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

Productinfo

Type

Project Management Software

Vendor

a2aproject

Name

a2a-rs

Version

License

open-source

Website

Product: https://github.com/a2aproject/a2a-rs/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Information exposure
CWE: CWE-209 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 713b943af94ab2d521d483b841618b97a2e78a4d

Timelineinfo

10/20/2026 Advisory disclosed
10/20/2026 +0 days VulDB entry created
10/20/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 127
Status: Confirmed

CVE: CVE-2026-113705 (🔒)
GCVE (CVE): GCVE-0-2026-113705
GCVE (VulDB): GCVE-100-422867

Entryinfo

Created: 10/20/2026 18:02
Changes: 10/20/2026 18:02 (56)
Complete: 🔍
Submitter: colorfullbz
Cache ID: 216::103

Submitinfo

Accepted

Submit #1014888: a2aproject a2a-rs a2a-server-lf ≤ 0.4.3 CWE-209 (by colorfullbz)