Tuesday, August 18, 2026

Today's Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Today's Security Brief

Remote code execution and authentication bypass flaws in widely deployed WordPress plugins and open-source libraries led yesterday's disclosures, with the jahlives openssl_encrypt library accounting for four separate CVSS 9.8 issues. Critical CVEs rose to 42 from 10 the prior day (up 320%), while high-priority CVEs fell to 95 from 104 (down 9%). Notable entries include CVE-2026-15038 (CVSS 9.8) in InfiniteWP Client, CVE-2026-15748 (CVSS 9.8) in the wpmudev Forminator Forms plugin, and CVE-2026-75045 (CVSS 9.1) in JetBrains YouTrack. Collaboration and developer tooling were also affected, with CVE-2026-55674 (CVSS 9.3) in Discourse and CVE-2026-66795 (CVSS 9.1) in Red Hat Multicluster Engine for Kubernetes. Two CVEs have confirmed active exploitation, and vendor patch data was unavailable for the full set at publication, so treat internet-facing WordPress installations and developer platforms as the priority for verification against vendor advisories.

  • jahlives openssl_encrypt accounted for four CVSS 9.8 CVEs, including CVE-2026-74891, CVE-2026-74894, CVE-2026-74880, and CVE-2026-74901
  • 42 critical CVEs (CVSS 9.0+), up 320% from 10 the prior day
  • 95 high-priority CVEs (CVSS 7.0-8.9), down 9% from 104 the prior day
  • Remote code execution and authentication bypass dominated, affecting InfiniteWP Client, wpmudev Forminator Forms, Discourse, and JetBrains YouTrack
  • Patch availability recorded at 0% at publication; verify fixed versions directly with vendors for WordPress plugins, YouTrack, and Red Hat Multicluster Engine for Kubernetes
  • Two CVEs are under confirmed active exploitation: CVE-2026-68820 in the Windows Ancillary Function Driver for WinSock and CVE-2025-62593 in Ray-Project Ray

Immediate action: Prioritize internet-facing WordPress deployments running InfiniteWP Client or Forminator Forms, along with JetBrains YouTrack, Discourse, and Red Hat Multicluster Engine for Kubernetes instances. Windows endpoints should be checked for the WinSock AFD issue and Ray clusters for the Ray-Project flaw, both of which are under active exploitation. Patch availability was reported at 0% for this set, so confirm fixed versions against vendor advisories and apply available mitigations or access restrictions where updates are not yet published.

How to read this brief

CVSS score (e.g. 9.1) — severity from 0–10. Red marks critical (9+), orange high (7–8.9).

Exploitability — how hard the flaw is to attack, read from the CVSS vector:

  • Network / Adjacent / Local / Physical — how close an attacker must get. Network means reachable over the internet.
  • No / Low / High privileges — the access they need first. No privileges means no login required.
  • No interaction / User interaction — whether a victim has to do something (open a file, click a link). No interaction means fully automatable.

The lower the bar on all three, the easier to exploit at scale — “Network · No privileges · No interaction” is the worst case: hit from anywhere, no credentials, no victim action.

Actively exploited — confirmed under attack in the wild (CISA’s Known Exploited Vulnerabilities catalog). Prioritize these regardless of score.

EPSS · Nth percentile — FIRST.org’s estimated chance a flaw is exploited within 30 days. We flag it only in the top 10% — a statistical signal it’s unusually likely to be targeted, separate from whether attacks are confirmed.

💡 Tip: Swipe CVE cards left to ⭐ star, right to ❌ remove

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