CVE-2026-53404

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — Patch released this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.3Exploit: None knownExposed: 0

A fix is available — apply it.

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity73% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

June 29, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-53404: Apache Tomcat: Bad ornext processing in RewriteValve

http://www.openwall.com/lists/oss-security/2026/06/29/21
generic
https://lists.apache.org/thread/rdhpghgfskrdmw9hqzjgjrtw538smpmz

Vendor Advisories for CVE-2026-53404(4)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntutomcat8-user (8.0.32-1ubuntu1.13+esm2) @ xenial2026-07-26ubuntu
redhattomcat-catalina2026-07-22redhat
redhatjws6-tomcat-0:10.1.49-15.redhat_00013.1.el9jws2026-07-22redhat
redhattomcat11-main-11.0.23-0.1.hum12026-06-29redhat
redhattomcat10-main-10.1.56-1.hum12026-06-24redhat

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

(2)

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 14× in last 7d / 106× 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.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-07-27 02:45 UTCEG score recompute
  2. 2026-07-27 02:45 UTCVendor advisory
  3. 2026-07-27 02:44 UTCGHSA enrichment
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 13:57 UTCEG score recompute
  6. 2026-07-26 13:57 UTCVendor advisory
  7. 2026-07-26 13:57 UTCGHSA enrichment
  8. 2026-07-25 14:18 UTCEPSS rescore
  9. 2026-07-24 14:18 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 03:19 UTCEG score recompute
  12. 2026-07-22 14:08 UTCEPSS rescore
  13. 2026-07-21 15:25 UTCEPSS rescore
  14. 2026-07-20 17:08 UTCEPSS rescore
  15. 2026-07-19 02:29 UTCEPSS rescore
  16. 2026-07-18 10:04 UTCEPSS rescore
  17. 2026-07-17 06:24 UTCVendor advisory
  18. 2026-07-17 06:24 UTCGHSA enrichment
  19. 2026-07-16 17:38 UTCVendor advisory
  20. 2026-07-16 17:38 UTCGHSA enrichment
  21. 2026-07-16 17:03 UTCEPSS rescore
  22. 2026-07-16 04:52 UTCVendor advisory
  23. 2026-07-16 04:52 UTCGHSA enrichment
  24. 2026-07-15 16:57 UTCEPSS rescore
  25. 2026-07-15 16:57 UTCEPSS rescore
Show 75 more
  1. 2026-07-15 16:05 UTCVendor advisory
  2. 2026-07-15 16:05 UTCGHSA enrichment
  3. 2026-07-15 03:19 UTCVendor advisory
  4. 2026-07-15 03:19 UTCGHSA enrichment
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 14:31 UTCVendor advisory
  8. 2026-07-14 14:31 UTCGHSA enrichment
  9. 2026-07-14 01:44 UTCVendor advisory
  10. 2026-07-14 01:44 UTCGHSA enrichment
  11. 2026-07-13 22:31 UTCEPSS rescore
  12. 2026-07-13 12:58 UTCVendor advisory
  13. 2026-07-13 12:58 UTCGHSA enrichment
  14. 2026-07-13 06:13 UTCEPSS rescore
  15. 2026-07-13 06:13 UTCEPSS rescore
  16. 2026-07-13 00:12 UTCVendor advisory
  17. 2026-07-13 00:12 UTCGHSA enrichment
  18. 2026-07-12 11:26 UTCVendor advisory
  19. 2026-07-12 11:26 UTCGHSA enrichment
  20. 2026-07-12 05:46 UTCEPSS rescore
  21. 2026-07-11 22:40 UTCVendor advisory
  22. 2026-07-11 22:39 UTCGHSA enrichment
  23. 2026-07-11 09:52 UTCVendor advisory
  24. 2026-07-11 09:52 UTCGHSA enrichment
  25. 2026-07-11 08:27 UTCEPSS rescore
  26. 2026-07-11 08:27 UTCEPSS rescore
  27. 2026-07-10 21:06 UTCVendor advisory
  28. 2026-07-10 21:06 UTCGHSA enrichment
  29. 2026-07-10 08:19 UTCVendor advisory
  30. 2026-07-10 08:19 UTCGHSA enrichment
  31. 2026-07-09 19:30 UTCVendor advisory
  32. 2026-07-09 19:30 UTCGHSA enrichment
  33. 2026-07-09 19:10 UTCEPSS rescore
  34. 2026-07-09 19:10 UTCEPSS rescore
  35. 2026-07-09 06:44 UTCVendor advisory
  36. 2026-07-09 06:44 UTCGHSA enrichment
  37. 2026-07-08 17:58 UTCVendor advisory
  38. 2026-07-08 17:58 UTCGHSA enrichment
  39. 2026-07-08 15:16 UTCEPSS rescore
  40. 2026-07-08 15:16 UTCEPSS rescore
  41. 2026-07-08 05:12 UTCVendor advisory
  42. 2026-07-08 05:12 UTCGHSA enrichment
  43. 2026-07-07 16:26 UTCVendor advisory
  44. 2026-07-07 16:25 UTCGHSA enrichment
  45. 2026-07-07 13:46 UTCEPSS rescore
  46. 2026-07-07 13:46 UTCEPSS rescore
  47. 2026-07-07 03:29 UTCVendor advisory
  48. 2026-07-07 03:28 UTCGHSA enrichment
  49. 2026-07-06 16:27 UTCEPSS rescore
  50. 2026-07-06 16:27 UTCEPSS rescore
  51. 2026-07-06 14:42 UTCVendor advisory
  52. 2026-07-06 14:42 UTCGHSA enrichment
  53. 2026-07-06 02:23 UTCEPSS rescore
  54. 2026-07-06 02:23 UTCEPSS rescore
  55. 2026-07-06 01:54 UTCVendor advisory
  56. 2026-07-06 01:54 UTCGHSA enrichment
  57. 2026-07-05 13:08 UTCVendor advisory
  58. 2026-07-05 13:08 UTCGHSA enrichment
  59. 2026-07-05 02:31 UTCEPSS rescore
  60. 2026-07-05 02:30 UTCEPSS rescore
  61. 2026-07-05 00:21 UTCVendor advisory
  62. 2026-07-05 00:21 UTCGHSA enrichment
  63. 2026-07-04 11:33 UTCVendor advisory
  64. 2026-07-04 11:33 UTCGHSA enrichment
  65. 2026-07-04 06:31 UTCEPSS rescore
  66. 2026-07-04 06:31 UTCEPSS rescore
  67. 2026-07-03 22:46 UTCVendor advisory
  68. 2026-07-03 22:46 UTCGHSA enrichment
  69. 2026-07-03 09:59 UTCVendor advisory
  70. 2026-07-03 09:59 UTCGHSA enrichment
  71. 2026-07-02 21:12 UTCEG score recompute▲ 7.30
  72. 2026-07-02 21:12 UTCVendor advisory
  73. 2026-07-02 21:12 UTCGHSA enrichment
  74. 2026-07-01 15:07 UTCEPSS rescore
  75. 2026-06-30 23:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-53404?
CVE-2026-53404 is a high vulnerability published on June 29, 2026. Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from…
When was CVE-2026-53404 disclosed?
CVE-2026-53404 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53404 actively exploited?
CVE-2026-53404 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.8% of all scored CVEs.
What is the CVSS score of CVE-2026-53404?
CVE-2026-53404 has a CVSS v3.1 base score of 7.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-53404?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53404, 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.

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