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High severity · published Sep 8, 2026
CVE-2026-86738
Snipe-IT before 8.7.0 CSS Injection via Custom CSS
8.7
CVSS
0.5%
EPSS
No
On KEV
Description
Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
snipe-it · grokability
before 8.7.0 · source: vendor, NVD
Affected product
SN
snipe-it
grokability
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86738
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86738
Patch
https://github.com/grokability/snipe-it/commit/d26d71688359707f3b257fc04fe6c3e5a17405f9
Patch
https://github.com/grokability/snipe-it/security/advisories/GHSA-pvcw-mp8q-mj39
Patch
https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-css-injection-via-custom-css
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