# CVE-2026-125362: Seahub through 14.0.10 Predictable Share Link Passwords via Batch Endpoint

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

Seahub through 14.0.10 contains a weak randomness vulnerability in MultiShareLinksBatch.post() that generates batch share link passwords using Python's non-cryptographic random.choices(). Authenticated users permitted to create share links can request many generated passwords via the multi-share-links batch endpoint, recover the Mersenne Twister state, and predict other users' share link passwords.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/haiwen/seahub/commit/dd3ba0341031fd29cabe4855b548badde861df52

## Affected products and versions

- haiwen / seahub: ≥ 0; ≤ 14.0.10 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 2.3 (low); CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 3.1 (low); CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-338

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/haiwen/seahub/issues/9687 (CNA: VulnCheck; issue-tracking)

- https://github.com/haiwen/seahub (CNA: VulnCheck; product)

- https://github.com/haiwen/seahub/blob/v14.0.10-pro/seahub/api2/endpoints/multi_share_links.py#L502-L512 (CNA: VulnCheck; technical-description)

- https://github.com/haiwen/seahub/commit/dd3ba0341031fd29cabe4855b548badde861df52 (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/seahub-through-14.0.10-predictable-share-link-passwords-via-batch-endpoint (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-125362; retrieved 2026-11-10; source updated 2026-11-09

Revision: ddd06bcb0164e781726b4f786fa8154b9028a31b74ee4c13922c8e09e2c9d98c

Canonical: https://y2.dev/cve/CVE-2026-125362

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