CVE-2026-73631

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-15. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.3Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-request parsing state could be shared across concurrent requests, allowing data associated with one request to become observable in another, and configured parsing limits not to be enforced as intended. Populating actions from a JSON request body is not enabled by default; applications that do not use the JSON plugin are not affected.

This issue affects Apache Struts: 7.2.1.

Users are recommended to upgrade to version 7.3.0, which fixes the issue.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100CISA SSVC

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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 15, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Aug 17, 2026
Fix named in the CVE record.
generic

S2-070 - Apache Struts 2 Wiki - Apache Software Foundation

https://cwiki.apache.org/confluence/display/WW/S2-070

Vendor Advisories for CVE-2026-73631(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 / 71× 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 148 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-73631?
CVE-2026-73631 is a medium vulnerability published on August 15, 2026. Exposure of data element to wrong session vulnerability in the JSON plugin of Apache Struts. Per-request parsing state could be shared across concurrent requests, allowing data associated with one request to become observable in another, and configured parsing limits not to be enforced as intended.…
When was CVE-2026-73631 disclosed?
CVE-2026-73631 was first published on August 15, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73631 actively exploited?
CVE-2026-73631 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73631?
CVE-2026-73631 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-73631?
The CVE record for CVE-2026-73631 names the fix: "Users are recommended to upgrade to version 7.3.0, which fixes the issue." The vendor advisories EchelonGraph has for CVE-2026-73631 are linked in the Vendor Advisories panel on this page.

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