CVE-2026-53960

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (22nd 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
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: 0.3%CVSS: 5.3Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A (QAPage) JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engine crawlers. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.

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.
Exploitation0.3% × 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: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

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

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

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

August 17, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Aug 17, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

Hidden first-post excerpt is emitted in Q&A schema JSON-LD · Advisory · discourse/discourse · GitHub

https://github.com/discourse/discourse/security/advisories/GHSA-j5j7-w5g3-43q8

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 48× 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.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  4. 2026-10-12 15:57 UTCEG score recompute
  5. 2026-10-11 19:40 UTCEG score recompute
  6. 2026-10-11 16:55 UTCEG score recompute
  7. 2026-10-11 14:18 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  13. 2026-10-07 11:27 UTCEG score recompute
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  15. 2026-10-06 09:03 UTCEG score recompute
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-10-03 17:48 UTCEG score recompute
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-10-02 15:46 UTCEG score recompute
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-10-01 11:22 UTCEG score recompute
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-09-30 10:01 UTCEG score recompute
Show 70 more
  1. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-28 09:38 UTCEG score recompute
  4. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-27 08:17 UTCEG score recompute
  6. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-25 05:24 UTCEG score recompute
  8. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-09-24 04:00 UTCEG score recompute
  10. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-09-23 02:31 UTCEG score recompute
  12. 2026-09-22 01:08 UTCEG score recompute
  13. 2026-09-20 23:46 UTCEG score recompute
  14. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-09-19 21:45 UTCEG score recompute
  16. 2026-09-18 20:24 UTCEG score recompute
  17. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-09-17 21:55 UTCEG score recompute
  19. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-09-16 15:16 UTCEG score recompute
  21. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-09-15 11:59 UTCEG score recompute
  24. 2026-09-14 10:36 UTCEG score recompute
  25. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  26. 2026-09-13 09:14 UTCEG score recompute
  27. 2026-09-12 07:53 UTCEG score recompute
  28. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  29. 2026-09-11 06:25 UTCEG score recompute
  30. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-09-09 03:41 UTCEG score recompute
  32. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  33. 2026-09-08 02:01 UTCEG score recompute
  34. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  35. 2026-09-07 00:39 UTCEG score recompute
  36. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  37. 2026-09-05 23:16 UTCEG score recompute
  38. 2026-09-04 21:54 UTCEG score recompute
  39. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  40. 2026-09-02 17:11 UTCEG score recompute
  41. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  42. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  43. 2026-09-01 13:08 UTCEG score recompute
  44. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  45. 2026-08-31 11:29 UTCEG score recompute
  46. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  47. 2026-08-30 09:03 UTCEG score recompute
  48. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  49. 2026-08-29 07:39 UTCEG score recompute
  50. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  51. 2026-08-28 06:17 UTCEG score recompute
  52. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  53. 2026-08-27 04:49 UTCEG score recompute
  54. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  55. 2026-08-26 03:26 UTCEG score recompute
  56. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  57. 2026-08-25 02:05 UTCEG score recompute
  58. 2026-08-24 00:44 UTCEG score recompute
  59. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  60. 2026-08-22 23:23 UTCEG score recompute
  61. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  62. 2026-08-21 22:01 UTCEG score recompute
  63. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  64. 2026-08-19 19:16 UTCEG score recompute
  65. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  66. 2026-08-18 17:49 UTCEG score recompute
  67. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  68. 2026-08-17 16:22 UTCEG score recompute
  69. 2026-08-17 16:10 UTCEG score recomputeFirst assessed: 5.3 MEDIUM
  70. 2026-08-17 16:09 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-53960?
CVE-2026-53960 is a medium-severity vulnerability; its CVE record was published on August 17, 2026. Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A (QAPage) JSON-LD structured data, exposing it to any unauthenticated visitor and to…
When was the CVE record for CVE-2026-53960 published?
The CVE record for CVE-2026-53960 was published on August 17, 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 September 18, 2026; the record at its source may have been updated since.
Is CVE-2026-53960 actively exploited?
CVE-2026-53960 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53960?
CVE-2026-53960 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53960?
The CVE record for CVE-2026-53960 names the fix: "This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0."

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