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Findings

CVE-2026-102941

sync 2026-10-16T15:41:51Z

Published Unknown date · evidence confidence medium

IsSafeURL slices url[:nPath] before checking that len(url) >= nPath, + so a URL shorter than a path prefix (0, 1 or 2 bytes) triggers a slice-bounds panic, + and this is reached end to end when the html.Safelink hardening flag is enabled + and the input contains an empty or very short link destination, giving an unrecoverable + crash DoS. Confirmed at HEAD (e08cff8; present since 2022)." +date: "2

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-102941 is a unknown public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: github.com/gomarkdown/markdown (<0.0.0-20260724235538-61af6e1e6971). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: no CVSS/EPSS yet. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: gitlab. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2026 · GitLab Advisory Database

    Detected

    IsSafeURL slices url[:nPath] before checking that len(url) >= nPath, + so a URL shorter than a path prefix (0, 1 or 2 bytes) triggers a slice-bounds panic, + and this is reached end to end when the html.Safelink hardening flag is enabled + and the input contains an empty or very short link destination, giving an unrecoverable + crash DoS. Confirmed at HEAD (e08cff8; present since 2022)." +date: "2

Affected

  • go github.com/gomarkdown/markdown<0.0.0-20260724235538-61af6e1e6971

Sources

  • GitLab Advisory DatabasePackage advisorygo/github.com/gomarkdown/markdown/CVE-2026-102941.yml

    IsSafeURL slices url[:nPath] before checking that len(url) >= nPath, + so a URL shorter than a path prefix (0, 1 or 2 bytes) triggers a slice-bounds panic, + and this is reached end to end when the html.Safelink hardening flag is enabled + and the input contains an empty or very short link destination, giving an unrecoverable + crash DoS. Confirmed at HEAD (e08cff8; present since 2022)." +date: "2

    gitlab.com