CVE-2026-62143
SSRF bypass in misp-modules html_to_markdown via IPv4-mapped IPv6 addresses.
Is CVE-2026-62143 being exploited?
Not confirmed. CVE-2026-62143 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-62143?
CVE-2026-62143 is rated High. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-62143?
Yes. A fix has been recorded for CVE-2026-62143. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62143 affect?
CVE-2026-62143 affects misp-modules (html_to_markdown expansion module), MISP instances using misp-modules. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62143?
Upgrade misp-modules to patched release; restrict access and block unwanted egress/internal fetches.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can make server fetch internal resources (loopback, internal web UIs, cloud metadata) and exfiltrate returned content as Markdown.
Patch when possible
- affected<= v3.0.8
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.