CVE-2022-1091Public exploitNetwork attack vector

Cross-site scripting via spoofed upload MIME type

Published Apr 18, 2022 · Updated Aug 2, 2024

Cross-site scripting in 10up Safe SVG before 1.9.10 allows remote attackers to upload unsanitized SVG content via a spoofed MIME type. The check_for_svg upload prefilter trusts the request-provided file type, so a non-SVG Content-Type skips sanitization even when the file is SVG. A victim must view or otherwise process the uploaded SVG for embedded script to execute; other XML attacks depend on downstream use.

CVSS severity6.1
Medium
EPSS probability1.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in 10up Safe SVG before 1.9.10 allows remote attackers to upload unsanitized SVG content via a spoofed MIME type. The check_for_svg upload prefilter trusts the request-provided file type, so a non-SVG Content-Type skips sanitization even when the file is SVG. A victim must view or otherwise process the uploaded SVG for embedded script to execute; other XML attacks depend on downstream use.

The record

CVE
CVE-2022-1091
Published
Apr 18, 2022
Updated
Aug 2, 2024
Vendor
10up
Product
Safe SVG
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.9.10 <1.9.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

10up · Safe SVGversion=1.9.10 <1.9.10

Published CVSS scores

6.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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