CVE-2026-45788

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.6% (49th 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
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, secure uploads could be exposed by pull_hotlinked_images when an attacker knew the secured upload URL and the secure_uploads site setting was enabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation0.6% × 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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
49th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). 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 9, 2026

Last Modified

July 14, 2026

Advisory Details (5)

Auto-updated Jul 9, 2026
Fix named in the CVE record. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Secure uploads exposed by hotlinked image copying · Advisory · discourse/discourse · GitHub

https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38
GitHub commit

commit fa74e0dec734 (discourse/discourse)

Fix landed in discourse/discourse commit fa74e0dec734 — awaiting tagged release

https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa
GitHub commit

commit eff53af26367 (discourse/discourse)

Fix landed in discourse/discourse commit eff53af26367 — awaiting tagged release

https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95
GitHub commit

commit 8b4a959b251a (discourse/discourse)

Fix landed in discourse/discourse commit 8b4a959b251a — awaiting tagged release

https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471
GitHub commit

commit 5807c426880e (discourse/discourse)

Fix landed in discourse/discourse commit 5807c426880e — awaiting tagged release

https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 30× 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 134 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 34 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 0.6% · 49th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-10-12 16:04 UTCEG score recompute
  4. 2026-10-11 19:46 UTCEG score recompute
  5. 2026-10-11 17:00 UTCEG score recompute
  6. 2026-10-11 14:26 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  17. 2026-10-01 16:00 UTCEG score recompute
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-09-28 09:59 UTCEG score recompute
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-09-24 11:22 UTCEG score recompute
  23. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  24. 2026-09-23 05:52 UTCEG score recompute
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.6% · 48th percentile
Show 75 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-09-18 05:28 UTCEG score recompute
  3. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-09-13 23:45 UTCEG score recompute
  7. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-09-13 08:16 UTCEG score recompute
  9. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-09-12 03:20 UTCEG score recompute
  11. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  16. 2026-09-06 13:58 UTCEG score recompute
  17. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-09-05 22:00 UTCEG score recompute
  19. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  20. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  22. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  23. 2026-08-30 06:42 UTCEG score recompute
  24. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  26. 2026-08-27 21:43 UTCEG score recompute
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  28. 2026-08-27 00:55 UTCEG score recompute
  29. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  30. 2026-08-26 03:47 UTCEG score recompute
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  32. 2026-08-24 20:19 UTCEG score recompute
  33. 2026-08-23 06:39 UTCEG score recompute
  34. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  35. 2026-08-22 08:41 UTCEG score recompute
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  37. 2026-08-20 23:37 UTCEG score recompute
  38. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  39. 2026-08-20 01:39 UTCEG score recompute
  40. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  41. 2026-08-18 20:40 UTCEG score recompute
  42. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  43. 2026-08-17 15:23 UTCEG score recompute
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  45. 2026-08-16 17:26 UTCEG score recompute
  46. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  47. 2026-08-16 06:27 UTCEG score recompute
  48. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  49. 2026-08-15 08:30 UTCEG score recompute
  50. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  51. 2026-08-13 23:34 UTCEG score recompute
  52. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  53. 2026-08-12 14:33 UTCEG score recompute
  54. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  55. 2026-08-11 16:28 UTCEG score recompute
  56. 2026-08-11 05:29 UTCEG score recompute
  57. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  58. 2026-08-09 20:34 UTCEG score recompute
  59. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  60. 2026-08-08 22:37 UTCEG score recompute
  61. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  62. 2026-08-08 00:39 UTCEG score recompute
  63. 2026-08-06 15:43 UTCEG score recompute
  64. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  65. 2026-08-06 04:33 UTCEG score recompute
  66. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  67. 2026-08-04 19:06 UTCEG score recompute
  68. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  69. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  70. 2026-08-03 19:35 UTCEG score recompute
  71. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  72. 2026-08-02 10:37 UTCEG score recompute
  73. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  74. 2026-08-01 12:35 UTCEG score recompute
  75. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.5% · 37th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45788?
CVE-2026-45788 is a high-severity vulnerability; its CVE record was published on July 9, 2026. Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, secure uploads could be exposed by pullhotlinkedimages when an attacker knew the secured upload URL and the secure_uploads site setting was enabled. This issue is fixed in versions 2026.6.0,…
When was the CVE record for CVE-2026-45788 published?
The CVE record for CVE-2026-45788 was published on July 9, 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-2026-45788 actively exploited?
CVE-2026-45788 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45788?
CVE-2026-45788 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45788?
The CVE record for CVE-2026-45788 names the fix: "This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5."

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-45788

Explore →

Is Your Infrastructure Affected by CVE-2026-45788?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs