CVE-2026-56768

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

Seahub before 13.0.23 does not enforce SHARE_LINK_LOGIN_REQUIRED on GET /api/v2.1/share-link-zip-task/, allowing unauthenticated users to bypass authentication. Attackers with a folder share-link token can call the GET endpoint to obtain a fileserver zip token and download entire shared directory trees.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 14, 2026

Advisory Details (5)

Auto-updated Jun 25, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Seahub < 13.0.23 - Authentication Bypass in ShareLinkZipTaskView GET Method | Advisories | VulnCheck

https://www.vulncheck.com/advisories/seahub-authentication-bypass-in-sharelinkziptaskview-get-method
generic

Seafile Wiki

https://plus.seafile.com/wiki/publish/seafile-wiki/v5D5/
generic

[Security] SHARE_LINK_LOGIN_REQUIRED bypass on GET /api/v2.1/share-link-zip-task/ · Issue #9050 · haiwen/seahub · GitHub

https://github.com/haiwen/seahub/issues/9050
github_commit

commit b609949cf64e (haiwen/seahub)

Fix landed in haiwen/seahub commit b609949cf64e — awaiting tagged release

https://github.com/haiwen/seahub/commit/b609949cf64ed6a15708d0fb5ea9c179962e23cc
github_commit

commit 162cddae0831 (haiwen/seahub)

Fix landed in haiwen/seahub commit 162cddae0831 — awaiting tagged release

https://github.com/haiwen/seahub/commit/162cddae0831188d02bb8d451dc2193e197dcc57

Vendor Advisories for CVE-2026-56768(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 28× in last 7d / 93× 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 121 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56768?
CVE-2026-56768 is a high vulnerability published on June 25, 2026. Seahub before 13.0.23 does not enforce SHARELINKLOGIN_REQUIRED on GET /api/v2.1/share-link-zip-task/, allowing unauthenticated users to bypass authentication. Attackers with a folder share-link token can call the GET endpoint to obtain a fileserver zip token and download entire shared directory…
When was CVE-2026-56768 disclosed?
CVE-2026-56768 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56768 actively exploited?
CVE-2026-56768 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 69.2% of all scored CVEs.
What is the CVSS score of CVE-2026-56768?
CVE-2026-56768 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-56768?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56768, 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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