CVE-2026-57862

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-30. The CNA's CVSS baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
8.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.5Exploit: Elevated riskExposed services: Not assessed

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

Kanboard 1.2.52 and prior contains a server-side request forgery vulnerability that allows authenticated users to bypass SSRF protections by supplying hexadecimal IP address notation in user-controlled URLs. Attackers can submit hexadecimal-encoded internal IP addresses through the web link creation feature, causing cURL to resolve and connect to internal network resources such as cloud instance metadata services, localhost services, and RFC1918 addresses while the isPrivateURL() filter in app/Core/Http/Client.php incorrectly treats the input as safe due to FILTER_VALIDATE_IP rejecting non-dotted-decimal notation.

CVSS v3
8.5
EG Score
8.5HIGHmedium confidence
EG Risk
54
EG Risk 54/100CISA SSVC

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
Severity85% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
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
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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 public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 30, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Jul 30, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Kanboard 1.2.52 and prior SSRF Filter Bypass via Hexadecimal IP Notation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kanboard-and-prior-ssrf-filter-bypass-via-hexadecimal-ip-notation
generic🟡 PoC Available

kanboard-ssrf-hexip-bypass.md · GitHub

https://gist.github.com/sermikr0/67c8acfc395e465127e729dc309da3ae
generic

GitHub - kanboard/kanboard: Kanban project management software · GitHub

https://github.com/kanboard/kanboard

Vendor Advisories for CVE-2026-57862(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 82× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 215 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-57862?
CVE-2026-57862 is a high vulnerability published on July 30, 2026. Kanboard 1.2.52 and prior contains a server-side request forgery vulnerability that allows authenticated users to bypass SSRF protections by supplying hexadecimal IP address notation in user-controlled URLs. Attackers can submit hexadecimal-encoded internal IP addresses through the web link…
When was CVE-2026-57862 disclosed?
CVE-2026-57862 was first published on July 30, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57862 actively exploited?
CVE-2026-57862 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57862?
CVE-2026-57862 has a CVSS base score of 8.5 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-57862?
No fix for CVE-2026-57862 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-2026-57862 are linked in the Vendor Advisories panel on this page.

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