Resource exhaustion in expr - CVE-2025-29786

Vulnerability identifier: #VU112435

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-29786

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

expr
IBM Observability with Instana
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
opentelemetry-collector (Red Hat package)
Cloud Pak for Data

Install updates from vendor's website.

expr - update to 1.17.0
IBM Observability with Instana - update to 1.0.309
opentelemetry-collector (Red Hat package) - update to 0.107.0-7.el9_4
Cloud Pak for Data - update to 5.1.2

• https://github.com/expr-lang/expr/pull/762
• https://github.com/expr-lang/expr/security/advisories/GHSA-93mq-9ffx-83m2

• Remote denial of service in Expr
• Red Hat Enterprise Linux 9 update for opentelemetry-collector
• Multiple vulnerabilities in IBM Observability with Instana
• IBM Cloud Pak for Data System update for Expr