CVE-2019-18857
XSS in enshrined/svg-sanitize due to mishandled script and data values in attributes
darylldoyle svg-sanitizer before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
darylldoyle svg-sanitizer before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
- Record
CVE-2019-18857- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
darylldoyle svg-sanitizer before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
- Record
CVE-2019-18857- Updated
- 2026-11-02
EUVDEUVD-2020-0264 No score
darylldoyle svg-sanitizer before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
- Record
EUVD-2020-0264- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gf8j-v8x5-h9qp
XSS in enshrined/svg-sanitize due to mishandled script and data values in attributes
enshrined/svg-sanitize before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
- Record
GHSA-gf8j-v8x5-h9qp- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
darylldoyle svg-sanitizer before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
- Record
CVE-2019-18857- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-gf8j-v8x5-h9qp
XSS in enshrined/svg-sanitize due to mishandled script and data values in attributes
enshrined/svg-sanitize before 0.12.0 mishandles script and data values in attributes, as demonstrated by unexpected whitespace such as in the javascript :alert substring.
- Record
GHSA-gf8j-v8x5-h9qp- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
enshrined/svg-sanitizePackagist |
before 0.12.0 | 0.12.0 |
enshrined/svg-sanitizePackagist |
before 0.12.0, plus listed versions 0.1.00.1.10.1.20.1.30.1.4 Show 24 moreShow less0.1.50.1.60.10.00.11.00.2.00.2.10.3.00.4.00.4.10.5.00.5.10.5.20.5.30.5.3.10.6.00.7.00.7.10.7.20.8.00.8.10.8.20.9.00.9.10.9.2 |
0.12.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-18857 is a high vulnerability (CVSS 7.5) in Svg-sanitizer Project Svg-sanitizer, published November 11, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. Fixed in enshrined/svg-sanitize 0.12.0.