CVE-2026-27784

MEDIUMNVD 5.57.8▲
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-03-24. NVD baseline CVSS 5.5; sources differ by 2.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS v3
5.5
EG Score
7.8(medium)
EG Risk
36(Track)
EG Risk 36/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
60.1%
KEV
Not listed

Published

March 24, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated Jul 15, 2026
No patch confirmed yet.
generic

myF5

https://my.f5.com/manage/s/article/K000160364

Vendor Advisories for CVE-2026-27784(7)

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

Patch Availability(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntunginx-light (1.10.3-0ubuntu0.16.04.5+esm7) @ xenial2026-06-30ubuntu
redhatnginx:1.24-9060020260504194843.92026-05-11redhat
redhatnginx:1.24-9040020260504195322.92026-05-11redhat
redhatnginx-1:1.20.1-10.el9_0.32026-05-11redhat
redhatnginx:1.26-9060020260504154614.92026-05-11redhat
redhatnginx-1:1.20.1-14.el9_2.52026-05-07redhat
redhatnginx-2:1.20.1-22.el9_6.52026-05-05redhat
redhatnginx-1:1.20.1-16.el9_4.52026-05-05redhat
redhatnginx-2:1.26.3-1.el10_0.82026-05-05redhat
redhatrhui5/rhua-rhel9:17768688422026-04-23redhat
redhatnginx-main-1.30.0-1.hum12026-04-15redhat
redhatnginx:1.26-9070020260407080353.92026-04-09redhat
redhatnginx-2:1.20.1-24.el9_7.22026-04-08redhat
redhatnginx:1.24-9070020260331134728.92026-04-07redhat
redhatnginx-2:1.26.3-2.el10_1.12026-04-07redhat
redhatnginx:1.24-8100020260401080144.489197e62026-04-07redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(11)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 15× in last 7d / 44× 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. 2026-07-23 03:08 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 15:24 UTCEPSS rescore
  5. 2026-07-21 15:24 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-20 17:08 UTCEPSS rescore
  8. 2026-07-19 14:31 UTCEPSS rescore
  9. 2026-07-19 14:31 UTCEPSS rescore
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-18 10:04 UTCEPSS rescore
  13. 2026-07-18 06:59 UTCOSV refresh
  14. 2026-07-16 17:03 UTCEPSS rescore
  15. 2026-07-16 17:03 UTCEPSS rescore
  16. 2026-07-15 16:57 UTCEPSS rescore
  17. 2026-07-15 16:57 UTCEPSS rescore
  18. 2026-07-15 02:22 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  19. 2026-07-15 02:00 UTCEPSS rescore
  20. 2026-07-15 02:00 UTCEPSS rescore
  21. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  22. 2026-07-13 22:30 UTCEPSS rescore
  23. 2026-07-13 06:13 UTCEPSS rescore
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-12 05:46 UTCEPSS rescore
Show 19 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:15 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 16:27 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-01 15:06 UTCEPSS rescore
  13. 2026-07-01 15:06 UTCEPSS rescore
  14. 2026-06-30 23:22 UTCEPSS rescore
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-30 04:32 UTCNVD updateCVSS v3 → 5.5 · CVSS v4 → 8.5 · severity → MEDIUM
  17. 2026-06-30 04:31 UTCEG score recompute
  18. 2026-06-30 04:31 UTCVendor advisory
  19. 2026-06-30 04:31 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-27784?
CVE-2026-27784 is a medium vulnerability published on March 24, 2026. The 32-bit implementation of NGINX Open Source has a vulnerability in the ngxhttpmp4module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is…
When was CVE-2026-27784 disclosed?
CVE-2026-27784 was first published in the National Vulnerability Database on March 24, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27784 actively exploited?
CVE-2026-27784 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-27784?
CVE-2026-27784 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.8.
How do I remediate CVE-2026-27784?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27784, 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-2026-27784

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