CVE-2026-58489

MEDIUMPre-NVD 6.86.8
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (6th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

HedgeDoc is an open source, real-time collaborative markdown notes application. Prior to 1.11.0, the GitHub Gist export flow created an OAuth2  state  value but only checked that it was present rather than validating it against the value expected for the user's session. Because the state was not properly validated, an attacker could forge a callback URL containing their own valid GitHub OAuth code. When processing the callback, HedgeDoc used the victim's logged-in session to select which note to export, but the attacker's authorization code to determine which GitHub account received it. As a result, a logged-in victim who clicked a crafted link could export their own private, protected, or limited note directly into a Gist controlled by the attacker. This issue has been fixed in version 1.11.0.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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)
Severity68% × 45%
The EG Score, 6.8 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

July 13, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jul 14, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

CSRF in GitHub Gist export callback · Advisory · hedgedoc/hedgedoc · GitHub

https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-8v9p-5j95-826j
GitHub commit Patch Available

commit fbd7307f1627 (hedgedoc/hedgedoc)

Patch available: hedgedoc/hedgedoc 1.11.0 (contains commit fbd7307f1627)

https://github.com/hedgedoc/hedgedoc/commit/fbd7307f162754212046ec343cbe691223a48c8d

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 35× 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 100 of 131 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. None are among the latest 100 rows. The 31 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-10-12 15:53 UTCEG score recompute
  4. 2026-10-11 19:36 UTCEG score recompute
  5. 2026-10-11 16:52 UTCEG score recompute
  6. 2026-10-11 14:14 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-01 13:51 UTCEG score recompute
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-28 09:27 UTCEG score recompute
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 75 more
  1. 2026-09-24 10:01 UTCEG score recompute
  2. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-09-23 04:16 UTCEG score recompute
  4. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-09-18 05:00 UTCEG score recompute
  7. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-09-14 10:26 UTCEG score recompute
  12. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-09-13 07:58 UTCEG score recompute
  14. 2026-09-12 01:49 UTCEG score recompute
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-09-08 01:52 UTCEG score recompute
  19. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-09-05 21:22 UTCEG score recompute
  22. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  26. 2026-08-30 05:27 UTCEG score recompute
  27. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  28. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  29. 2026-08-28 02:36 UTCEG score recompute
  30. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  31. 2026-08-27 00:12 UTCEG score recompute
  32. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  33. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  34. 2026-08-25 13:14 UTCEG score recompute
  35. 2026-08-24 10:49 UTCEG score recompute
  36. 2026-08-23 08:25 UTCEG score recompute
  37. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  38. 2026-08-22 06:01 UTCEG score recompute
  39. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-08-21 03:36 UTCEG score recompute
  41. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-08-20 01:08 UTCEG score recompute
  43. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  44. 2026-08-18 20:26 UTCEG score recompute
  45. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-08-17 14:05 UTCEG score recompute
  47. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-08-16 11:41 UTCEG score recompute
  50. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  51. 2026-08-15 09:17 UTCEG score recompute
  52. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  53. 2026-08-14 06:53 UTCEG score recompute
  54. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-08-13 04:29 UTCEG score recompute
  56. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  57. 2026-08-12 02:05 UTCEG score recompute
  58. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-08-09 21:17 UTCEG score recompute
  60. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  61. 2026-08-08 18:53 UTCEG score recompute
  62. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-08-06 14:05 UTCEG score recompute
  64. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  65. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  66. 2026-08-05 11:41 UTCEG score recompute
  67. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  69. 2026-08-04 09:17 UTCEG score recompute
  70. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-08-02 04:17 UTCEG score recompute
  72. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  73. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  74. 2026-07-30 23:28 UTCEG score recompute
  75. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

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Frequently asked(5)

What is CVE-2026-58489?
CVE-2026-58489 is a medium-severity vulnerability; its CVE record was published on July 13, 2026. HedgeDoc is an open source, real-time collaborative markdown notes application. Prior to 1.11.0, the GitHub Gist export flow created an OAuth2 state value but only checked that it was present rather than validating it against the value expected for the user's session. Because the state was not…
When was the CVE record for CVE-2026-58489 published?
The CVE record for CVE-2026-58489 was published on July 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-58489 actively exploited?
CVE-2026-58489 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58489?
CVE-2026-58489 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58489?
A fix for CVE-2026-58489 is available: update to the fixed version the vendor names in its advisory.

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