CVE-2026-57862

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH 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(high)
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 27× in last 7d / 86× 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.

  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 21:37 UTCGHSA enrichment
  3. 2026-08-20 08:33 UTCGHSA enrichment
  4. 2026-08-19 19:29 UTCEG score recompute
  5. 2026-08-19 19:29 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 05:21 UTCGHSA enrichment
  8. 2026-08-18 15:56 UTCEG score recompute
  9. 2026-08-18 15:56 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 01:02 UTCEG score recompute
  12. 2026-08-18 01:02 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 11:14 UTCGHSA enrichment
  15. 2026-08-16 22:10 UTCEG score recompute
  16. 2026-08-16 22:10 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 09:05 UTCEG score recompute
  19. 2026-08-16 09:05 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 20:01 UTCGHSA enrichment
  22. 2026-08-15 06:57 UTCEG score recompute
  23. 2026-08-15 06:57 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 17:11 UTCEG score recompute
Show 61 more
  1. 2026-08-14 17:11 UTCGHSA enrichment
  2. 2026-08-14 16:13 UTCGHSA enrichment
  3. 2026-08-14 03:08 UTCEG score recompute
  4. 2026-08-14 03:08 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 14:04 UTCGHSA enrichment
  7. 2026-08-13 01:00 UTCEG score recompute
  8. 2026-08-13 01:00 UTCGHSA enrichment
  9. 2026-08-12 13:51 UTCEPSS rescore
  10. 2026-08-12 11:56 UTCGHSA enrichment
  11. 2026-08-11 22:52 UTCEG score recompute
  12. 2026-08-11 22:52 UTCGHSA enrichment
  13. 2026-08-11 09:48 UTCEG score recompute
  14. 2026-08-11 09:48 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 20:44 UTCGHSA enrichment
  17. 2026-08-10 07:40 UTCGHSA enrichment
  18. 2026-08-09 18:36 UTCEG score recompute
  19. 2026-08-09 18:36 UTCGHSA enrichment
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-09 05:32 UTCGHSA enrichment
  22. 2026-08-08 16:28 UTCGHSA enrichment
  23. 2026-08-08 03:24 UTCEG score recompute
  24. 2026-08-08 03:24 UTCGHSA enrichment
  25. 2026-08-07 14:19 UTCGHSA enrichment
  26. 2026-08-07 01:15 UTCEG score recompute
  27. 2026-08-07 01:15 UTCGHSA enrichment
  28. 2026-08-06 13:47 UTCEPSS rescore
  29. 2026-08-06 12:12 UTCGHSA enrichment
  30. 2026-08-05 23:07 UTCEG score recompute
  31. 2026-08-05 23:07 UTCGHSA enrichment
  32. 2026-08-05 19:17 UTCEPSS rescore
  33. 2026-08-05 10:03 UTCGHSA enrichment
  34. 2026-08-04 21:00 UTCEG score recompute
  35. 2026-08-04 20:59 UTCGHSA enrichment
  36. 2026-08-04 15:10 UTCEPSS rescore
  37. 2026-08-04 10:39 UTCEPSS rescore
  38. 2026-08-04 07:54 UTCGHSA enrichment
  39. 2026-08-03 18:48 UTCEG score recompute
  40. 2026-08-03 18:48 UTCGHSA enrichment
  41. 2026-08-03 10:36 UTCEPSS rescore
  42. 2026-08-03 05:43 UTCGHSA enrichment
  43. 2026-08-02 16:37 UTCGHSA enrichment
  44. 2026-08-02 03:33 UTCEG score recompute
  45. 2026-08-02 03:33 UTCGHSA enrichment
  46. 2026-08-02 02:27 UTCEPSS rescore
  47. 2026-08-01 14:29 UTCEG score recompute
  48. 2026-08-01 14:29 UTCGHSA enrichment
  49. 2026-08-01 04:16 UTCEPSS rescore
  50. 2026-08-01 01:24 UTCGHSA enrichment
  51. 2026-07-31 12:18 UTCEG score recompute
  52. 2026-07-31 12:18 UTCGHSA enrichment
  53. 2026-07-31 12:00 UTCEG score recompute
  54. 2026-07-31 12:00 UTCGHSA enrichment
  55. 2026-07-31 08:35 UTCGHSA enrichment
  56. 2026-07-30 19:31 UTCEG score recompute
  57. 2026-07-30 19:31 UTCGHSA enrichment
  58. 2026-07-30 18:02 UTCEG score recompute
  59. 2026-07-30 16:28 UTCEG score recompute
  60. 2026-07-30 15:39 UTCEG score recompute
  61. 2026-07-30 15:36 UTCMITRE cvelistV5first tracked

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 78.0% 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

Explore the affected products and dependency analysis for CVE-2026-57862

Explore →

Is Your Infrastructure Affected by CVE-2026-57862?

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

Start Free Scan →Browse All CVEs