CVE-2026-9563

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-02. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

In Eclipse Parsson published Maven Central artifacts before version 1.1.8, the JSON parser did not enforce a default maximum on the number of characters consumed while parsing a single JSON document. Applications that parse attacker- controlled JSON can be forced to consume excessive CPU and memory by processing very large documents, including large arrays, objects, strings, numbers, whitespace, or nested structures, resulting in a denial of service. Eclipse Parsson 1.1.8 introduces a configurable maximum parsing limit with a default limit of 15 million parser-consumed characters.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

July 2, 2026

Last Modified

July 2, 2026

Advisory Details (5)

Auto-updated Jul 2, 2026
Patch available. Sources: github_commit, github_pr.
generic

Central Repository: org/eclipse/parsson/parsson/1.1.8

https://repo.maven.apache.org/maven2/org/eclipse/parsson/parsson/1.1.8/
generic

[Eclipse Parsson] DoS vulnerability (#444) · Issues · Eclipse Projects Security / vulnerability-reports · GitLab

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/444
generic

GitHub - eclipse-ee4j/parsson at 1.1.8 · GitHub

https://github.com/eclipse-ee4j/parsson/tree/1.1.8
github_pr Patch Available

json input size limit

Patch available: eclipse-ee4j/parsson 1.1.9 (PR #169 merged 2026-05-25)

https://github.com/eclipse-ee4j/parsson/pull/169
github_commit Patch Available

commit 134e8d101aa7 (eclipse-ee4j/parsson)

Patch available: eclipse-ee4j/parsson 1.1.9 (contains commit 134e8d101aa7)

https://github.com/eclipse-ee4j/parsson/commit/134e8d101aa74c8b9302d0cb62f6ccb4912a9d0c

Vendor Advisories for CVE-2026-9563(2)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 90× 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 188 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9563?
CVE-2026-9563 is a high vulnerability published on July 2, 2026. In Eclipse Parsson published Maven Central artifacts before version 1.1.8, the JSON parser did not enforce a default maximum on the number of characters consumed while parsing a single JSON document. Applications that parse attacker- controlled JSON can be forced to consume excessive CPU and memory…
When was CVE-2026-9563 disclosed?
CVE-2026-9563 was first published in the National Vulnerability Database 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-2026-9563 actively exploited?
CVE-2026-9563 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 52.1% of all scored CVEs.
What is the CVSS score of CVE-2026-9563?
CVE-2026-9563 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-9563?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9563, 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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