High severity · published Sep 16, 2026
CVE-2026-77404
RabbitMQ amqp091-go: Connection Configuration Overwrite via Unsanitized TLS Path Parameter Injection
8.7
CVSS
0.1%
EPSS
No
On KEV
Description
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, URI.String in uri.go concatenates CertFile, KeyFile, CACertFile, and ServerName values directly into an AMQPS query string instead of encoding them as URL query parameters with url.Values. If an application accepts a TLS asset path containing ampersand or equals delimiters and later reparses the serialized URI with ParseURI, the embedded delimiters can create or overwrite connection options, including paths to TLS certificate, key, or CA files. This can corrupt connection configuration or select unintended local cryptographic assets. This issue is fixed in version 1.13.0.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AM
amqp091-go · rabbitmq
< 1.13.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77404
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77404
github.com
https://github.com/rabbitmq/amqp091-go/commit/743d488e46955fe7ffc55506fe2c401d01216783
github.com
https://github.com/rabbitmq/amqp091-go/pull/352
github.com
https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0
github.com
https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-465g-fh3v-9jw4
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9.5
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