Vulnerability in github.com/rabbitmq/amqp091-go (CVE-2026-77404)
Summary
Vulnerability in github.com/rabbitmq/amqp091-go (CVE-2026-77404). Risk of unauthorized operations or information disclosure. Exploitable via url.QueryEscape. Mitigation: upgrade to 1.13.0 or later.
Original description
The description as published by the source.
Summary
A query parameter injection vulnerability exists in the AMQP client's connection URI formatting logic. When generating or parsing connection URIs, TLS-related filesystem paths (such as certificates or keys) are appended directly to the URI's query string using string concatenation rather than secure URL encoding via functions like url.QueryEscape.
If an application handles a TLS file path containing special character delimiters (such as & or =), these characters are interpreted as parameter separators by the URI parser. If the resulting URI.String() output is subsequently re-parsed via ParseURI, the injected fields can silently overwrite or hijack critical configuration parameters, forcing the client to use arbitrary connection settings or alternate TLS files.
Vulnerability Details
Mechanism
The vulnerability lies within the lack of proper escaping when compiling connection string components into a raw URL format:
// Example of insecure string concatenation during URI building
uri := fmt.Sprintf("amqps://user:pass@host/%s?certfile=%s&keyfile=%s", vhost, certPath, keyPath)
Because certPath and keyPath are not passed through url.QueryEscape, special URL characters preserve their control meanings. For instance, if a user supply a certificate path named:
/tmp/cert=foo&keyfile=/evil/path
The generated string translates into:
...?certfile=/tmp/cert=foo&keyfile=/evil/path&keyfile=/original/path
When this string passes back…
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-77404 has been found in github.com/rabbitmq/amqp091-go.
Attackers can target a specific entry point like url.QueryEscape over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade github.com/rabbitmq/amqp091-go to 1.13.0 or later.
If unsure, ask your IT team or search "github.com/rabbitmq/amqp091-go CVE-2026-77404" on the vendor's site.
CVE-2026-77404 (github.com/rabbitmq/amqp091-go) — CWE-116
Attack surface: url.QueryEscape / ParseURI / certPath / keyPath
Patched: 1.13.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-116) exists in github.com/rabbitmq/amqp091-go. Attackers reach the vulnerable code path via url.QueryEscape.
Check the vendor advisory for the affected versions of github.com/rabbitmq/amqp091-go. Attack surface: url.QueryEscape / ParseURI / certPath / keyPath.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1.13.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/rabbitmq/amqp091-go' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'github.com/rabbitmq/amqp091-go' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/rabbitmq/amqp091-goを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/rabbitmq/amqp091-go to 1.13.0ステージング環境で 1.13.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-77404 golang-github-rabbitmq-amqp091-go
- Ubuntu UBUNTU-CVE-2026-77404 golang-github-rabbitmq-amqp091-go
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com
- web github.com
- web github.com