CVE-2026-14355

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 78% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without accounting for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata and triggering application abort.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
22.4%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 8, 2026

Advisory Details (1)

Auto-updated Jul 3, 2026
Patch available. Sources: github.
github Patch Available

ext/openssl: Memory corruption (zend_mm_heap corrupted) in openssl_encrypt with AES-WRAP-PAD · Advisory · php/php-src · GitHub

https://github.com/php/php-src/security/advisories/GHSA-7jrw-539f-x6vr

Vendor Advisories for CVE-2026-14355(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-13 13:09 UTCEG score recompute
  2. 2026-07-13 06:12 UTCEPSS rescore
  3. 2026-07-12 14:06 UTCEG score recompute
  4. 2026-07-12 05:46 UTCEPSS rescore
  5. 2026-07-11 15:03 UTCEG score recompute
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-10 16:00 UTCEG score recompute
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 16:58 UTCEG score recompute▼ 0.30
  10. 2026-07-08 20:53 UTCNVD updateCVSS v3 → 5.3
  11. 2026-07-08 17:53 UTCEG score recompute
  12. 2026-07-07 18:50 UTCEG score recompute
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-06 19:43 UTCEG score recompute
  15. 2026-07-06 16:27 UTCEPSS rescore
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-05 20:34 UTCEG score recompute
  18. 2026-07-05 02:30 UTCEPSS rescore
  19. 2026-07-05 02:30 UTCEPSS rescore
  20. 2026-07-04 21:33 UTCEG score recompute
  21. 2026-07-03 22:30 UTCEG score recompute
  22. 2026-07-03 22:27 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-14355?
CVE-2026-14355 is a medium vulnerability published on July 3, 2026. In PHP versions 8.2. before 8.2.32, 8.3. before 8.3.32, 8.4. before 8.4.23, 8.5. before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without…
When was CVE-2026-14355 disclosed?
CVE-2026-14355 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14355 actively exploited?
CVE-2026-14355 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-14355?
CVE-2026-14355 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-14355?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14355, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-14355

Explore →

Is Your Infrastructure Affected by CVE-2026-14355?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs