How severe is CVE-2026-86751?

CVE-2026-86751 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-86751 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-86751?

CVE-2026-86751 affects Snipeitapp Snipe-it. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-86751?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-86751 published?

CVE-2026-86751 was published on 2026-09-09 and last updated on 2026-09-14.

CVE-2026-86751

CVE-2026-86751 is a high-severity vulnerability in Snipeitapp Snipe-it with a CVSS 3.x base score of 8.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-73.

Key facts

Severity: High (CVSS 3.x base score 8.5)
CVSS v4: 8.4
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-73
Affected product: Snipeitapp Snipe-it
Published: 2026-09-09
Last modified: 2026-09-14

Description

Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY.

Frequently asked questions

What is CVE-2026-86751?: Snipe-IT before 8.7.0 fails to properly sanitize markdown image syntax in note fields, allowing authenticated users to read arbitrary server files and issue server-side HTTP requests. Attackers can submit markdown image syntax in checkout acceptance notes that survive HTML escaping, are expanded by CommonMark parser, and resolved by laravel-mail-auto-embed via file_get_contents or curl, exfiltrating sensitive files like .env containing APP_KEY.
How severe is CVE-2026-86751?: CVE-2026-86751 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-86751 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-86751?: CVE-2026-86751 affects Snipeitapp Snipe-it. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-86751?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-86751 published?: CVE-2026-86751 was published on 2026-09-09 and last updated on 2026-09-14.

References

Affected products (1)

cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:*

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