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 a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: Elevated riskExposed: 0

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

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
8.5(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 14, 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 22× in last 7d / 90× 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 180 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 in the National Vulnerability Database on July 30, 2026, with the most recent update on August 14, 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% probability of exploitation in the next 30 days, which ranks it in the top 77.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57862?
CVE-2026-57862 has a CVSS v4.0 base score of 8.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-57862?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57862, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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