Red Hat Security Advisory: Red Hat Lightspeed (formerly Insights) for Runtimes security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.5 High : upgrade Red Hat url to 1.26.1 or 1.25.8 soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.26.1, 1.25.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade net/url to 1.26.1 or 1.25.8.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Go standard librarynet/url | Affected
| Fixed in
|
| Go standard librarynet/url | Affected
| Fixed in
|
Gonet/urlpkg:golang/net/urlOther threats | Affected
| Fixed in– |
Gonet/urlpkg:golang/net/urlOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released an update for Red Hat Lightspeed for Runtimes on RHEL 9 that addresses these vulnerabilities. Users should ensure all previously released errata are applied before updating. For CVE-2026-25679, no effective mitigation other than applying the update is currently available or meets Red Hat's criteria. Therefore, applying the official update is the recommended remediation. Refer to Red Hat's advisory RHSA-2026:9052 and the article https://access.redhat.com/articles/11258 for detailed update instructions.
Description
An update is now available for Red Hat Lightspeed (formerly Insights) for Runtimes on RHEL 9. Security fix(es): * crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137) * net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
- access.redhat.com/errata/RHSA-2026:9052 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-25679 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-27137 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_9052.json (opens in a new tab)