CVE-2026-84282

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory published 2026-09-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
6.5EG
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: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin version 9.12. The /apps/onlyoffice/ajax/settings/address endpoint does not sufficiently validate the user-supplied Document Server URL before initiating outbound connections. An authenticated administrator can manipulate the document server parameter to cause the ownCloud server to send arbitrary requests to attacker-controlled destinations, including localhost and internal network hosts. This allows internal network reconnaissance and TCP port scanning based on differences in server responses.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.3% × 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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
17th
KEV
Not listed

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

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

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

September 8, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 10, 2026
No fix on record yet. Sources: cert.
CERT

VU#943094 - ONLYOFFICE ownCloud integration plugin contains a Server-Side Request Forgery (SSRF) vulnerability

https://kb.cert.org/vuls/id/943094
Web page

onlyoffice-owncloud/controller/settingsapicontroller.php at master · ONLYOFFICE/onlyoffice-owncloud · GitHub

https://github.com/ONLYOFFICE/onlyoffice-owncloud/blob/master/controller/settingsapicontroller.php

Vendor Advisories for CVE-2026-84282(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 81× 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.

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. 2 repeat rows among the latest 99 are merged into the row they repeat.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  3. 2026-10-12 14:53 UTCEG score recompute
  4. 2026-10-11 19:18 UTCEG score recompute
  5. 2026-10-11 16:47 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  6. 2026-10-11 16:35 UTCEG score recompute
  7. 2026-10-11 13:52 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  10. 2026-10-10 00:23 UTCEG score recompute
  11. 2026-10-10 00:23 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  13. 2026-10-09 00:40 UTCEG score recompute
  14. 2026-10-09 00:40 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  15. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  16. 2026-10-08 00:43 UTCEG score recompute
  17. 2026-10-08 00:43 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  19. 2026-10-07 01:01 UTCEG score recompute
  20. 2026-10-07 01:01 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  22. 2026-10-06 00:53 UTCEG score recompute
  23. 2026-10-06 00:53 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  24. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  25. 2026-10-05 01:12 UTCEG score recompute
Show 72 more
  1. 2026-10-05 01:12 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  2. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  3. 2026-10-04 01:21 UTCEG score recompute
  4. 2026-10-04 01:21 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  5. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  6. 2026-10-03 01:36 UTCEG score recompute
  7. 2026-10-03 01:36 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  8. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  9. 2026-10-02 01:54 UTCEG score recompute
  10. 2026-10-02 01:54 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  11. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  12. 2026-10-01 02:10 UTCEG score recompute
  13. 2026-10-01 02:10 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  14. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  15. 2026-09-30 02:21 UTCEG score recompute
  16. 2026-09-30 02:21 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  17. 2026-09-28 22:18 UTCEG score recompute
  18. 2026-09-28 22:18 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  19. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  20. 2026-09-27 22:35 UTCEG score recompute
  21. 2026-09-27 22:35 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  23. 2026-09-26 22:53 UTCEG score recompute
  24. 2026-09-26 22:53 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  25. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  26. 2026-09-25 23:11 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  27. 2026-09-24 19:23 UTCEG score recompute
  28. 2026-09-24 19:23 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  29. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 17th percentile
  30. 2026-09-23 19:41 UTCEG score recompute
  31. 2026-09-23 19:41 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  32. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  33. 2026-09-22 18:49 UTCEG score recompute
  34. 2026-09-22 18:49 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  35. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  36. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  37. 2026-09-21 19:07 UTCEG score recompute
  38. 2026-09-21 19:07 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  39. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  40. 2026-09-20 19:26 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  41. 2026-09-19 19:43 UTCEG score recompute
  42. 2026-09-19 19:43 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  43. 2026-09-18 20:01 UTCEG score recompute
  44. 2026-09-18 20:01 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  45. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  46. 2026-09-17 20:19 UTCEG score recompute
  47. 2026-09-17 20:19 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  48. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  49. 2026-09-16 18:18 UTCEG score recompute
  50. 2026-09-16 18:17 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  51. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  52. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  53. 2026-09-15 16:53 UTCEG score recompute
  54. 2026-09-15 16:53 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  55. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  56. 2026-09-14 17:11 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  57. 2026-09-13 17:29 UTCEG score recompute
  58. 2026-09-13 17:29 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  59. 2026-09-12 17:47 UTCEG score recompute
  60. 2026-09-12 17:47 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  61. 2026-09-11 18:06 UTCEG score recompute
  62. 2026-09-11 18:06 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj · GitHub CVSS 6.5
  63. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  64. 2026-09-10 18:24 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj
  65. 2026-09-10 18:05 UTCEG score recomputeFirst assessed: 6.5 MEDIUM
  66. 2026-09-10 18:05 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj
  67. 2026-09-10 18:04 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  68. 2026-09-08 19:49 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj
  69. 2026-09-08 16:44 UTCGHSA enrichmentGHSA-wpfp-j2f8-c6vj
  70. 2026-09-08 15:27 UTCNVD update
  71. 2026-09-08 14:37 UTCEG score recompute
  72. 2026-09-08 14:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-84282?
CVE-2026-84282 is a medium-severity vulnerability; its CVE record was published on September 8, 2026. A Server-Side Request Forgery (SSRF) vulnerability exists in the ONLYOFFICE ownCloud Integration plugin version 9.12. The /apps/onlyoffice/ajax/settings/address endpoint does not sufficiently validate the user-supplied Document Server URL before initiating outbound connections. An authenticated…
When was the CVE record for CVE-2026-84282 published?
The CVE record for CVE-2026-84282 was published on September 8, 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 10, 2026; the record at its source may have been updated since.
Is CVE-2026-84282 actively exploited?
CVE-2026-84282 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (17th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-84282?
CVE-2026-84282 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84282?
No fix for CVE-2026-84282 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-84282 are linked in the Vendor Advisories panel on this page.

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