CVE-2026-6501

MEDIUMNVD 5.35.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.4% (31st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

Improper restriction of XML external entity reference vulnerability in ILM Informatique jOpenDocument allows Data Serialization External Entities Blowup.

This issue affects jOpenDocument: 1.5.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

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 (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 4, 2026

Last Modified

May 5, 2026

Advisory Details (1)

Auto-updated May 4, 2026
No fix on record yet.
Web page

jOpenDocument - Documentation

https://www.jopendocument.org/documentation.html

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
mavenorg.jopendocument:jOpenDocument—ghsa

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.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.jopendocument:jOpenDocument1.0, 1.1, 1.2, 1.3, 1.3b1
  • every version through 1.3: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 26× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 94 of 197 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 6 repeat rows among the latest 100 are merged into the row they repeat. The 103 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:32 UTCEG score recompute
  2. 2026-10-11 16:47 UTCEG score recompute
  3. 2026-10-11 14:08 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  15. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  16. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 69 more
  1. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  3. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  4. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  7. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  10. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  11. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  13. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  14. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  15. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  16. 2026-08-23 21:34 UTCEG score recompute
  17. 2026-08-23 21:34 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  18. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-08-17 13:12 UTCEG score recompute
  24. 2026-08-17 13:12 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  25. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  26. 2026-08-16 05:04 UTCEG score recompute
  27. 2026-08-16 05:04 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  28. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  29. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  30. 2026-08-14 03:38 UTCEG score recompute
  31. 2026-08-14 03:38 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  32. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  33. 2026-08-12 17:17 UTCEG score recompute
  34. 2026-08-12 17:17 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  35. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  36. 2026-08-11 02:54 UTCEG score recompute
  37. 2026-08-11 02:54 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  38. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  39. 2026-08-10 02:50 UTCEG score recompute
  40. 2026-08-10 02:50 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  41. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  42. 2026-08-09 02:46 UTCEG score recompute
  43. 2026-08-09 02:46 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  44. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  45. 2026-08-08 02:21 UTCEG score recompute
  46. 2026-08-08 02:21 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  47. 2026-08-07 02:16 UTCEG score recompute
  48. 2026-08-07 02:16 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  49. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  50. 2026-08-05 22:30 UTCEG score recompute
  51. 2026-08-05 22:30 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  52. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  53. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  54. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  55. 2026-08-03 20:10 UTCEG score recompute
  56. 2026-08-03 20:10 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  57. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  58. 2026-08-02 05:29 UTCEG score recompute
  59. 2026-08-02 05:29 UTCGHSA enrichmentGHSA-j9rh-p96m-mhhp
  60. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  61. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  62. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  63. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  64. 2026-07-28 15:37 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  65. 2026-07-27 14:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  66. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  67. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  68. 2026-07-24 14:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  69. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6501?
CVE-2026-6501 is a medium-severity vulnerability; its CVE record was published on May 4, 2026. Improper restriction of XML external entity reference vulnerability in ILM Informatique jOpenDocument allows Data Serialization External Entities Blowup. This issue affects jOpenDocument: 1.5.
When was CVE-2026-6501 made public?
CVE-2026-6501 was made public on May 4, 2026: that is the date its CVE record's CNA, TCS-CERT (Thales Cyber Solutions Customer’s CERT), gives for when the vulnerability was made public. The CVE record itself was published on May 4, 2026. EchelonGraph's copy of the record carries a last-modified date of May 5, 2026; the record at its source may have been updated since.
Is CVE-2026-6501 actively exploited?
CVE-2026-6501 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-6501?
CVE-2026-6501 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-6501?
No fix for CVE-2026-6501 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix.

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