SB2026091341 - openEuler 24.03 LTS SP3 update for ruby

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2026-80213)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to bypass hostname validation restrictions.

The vulnerability exists due to improper input validation in the resolv hostname resolution logic when resolving a hostname after it has been checked against an allow list or SSRF filter. A remote attacker can supply a crafted hostname so that the validated string and the name sent to the network differ to bypass hostname validation restrictions.

This requires a hostname that exceeds DNS length limits.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-3868