Medium · CVSS 6.9CVE-2026-113705

a2aproject a2a-rs error.rs information exposureCVE-2026-113705

Answer in brief

CVE-2026-113705 records a Medium severity (CVSS 6.9) vulnerability in a2aproject a2a-rs error.rs information exposure. The current sources do not mark it as known exploited. The current feed maps a2aproject/a2a-rs (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 20, 2026Updated Oct 20, 2026Source checked Oct 21, 2026First seen by HOL Oct 20, 2026Material review Oct 20, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps a2aproject/a2a-rs (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
a2aproject/a2a-rsgeneric	0.4.0 \|\| 0.4.1 \|\| 0.4.2 \|\| 0.4.3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for a2aproject/a2a-rs.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 20, 2026

Sources and claim methodology

Upstream source description

A vulnerability was determined in a2aproject a2a-rs up to 0.4.3. This issue affects some unknown processing of the file a2a-server/src/error.rs. Executing a manipulation can lead to information exposure through error message. The attack can be executed remotely. This patch is called 713b943af94ab2d521d483b841618b97a2e78a4d. A patch should be applied to remediate this issue.

Quoted source text, attributed separately from HOL analysis.

a2aproject a2a-rs Push Notification push_notification_sender.rs HttpPushSender server-side request forgerySame a2aproject/a2a-rs package