XSS in 10up Safe Svg

CVE-2022-1091

The sanitisation step of the Safe SVG WordPress plugin before 1.9.10 can be bypassed by spoofing the content-type in the POST request to upload a file. Exploiting this vulnerability, an attacker will be able to perform the kinds of attacks that this plugin should prevent (mainly XSS, but depending on further use of uploaded SVG files potentially other XML attacks).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.012 (64.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-1091?
CVE-2022-1091 is a medium-severity vulnerability in 10up Safe Svg, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-04-18.
How severe is CVE-2022-1091?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2022-1091 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.