How severe is CVE-2019-18857?

CVE-2019-18857 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-18857 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18857?

CVE-2019-18857 affects Svg-sanitizer Project Svg-sanitizer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18857?

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-2019-18857 published?

CVE-2019-18857 was published on 2019-11-11 and last updated on 2026-06-17.

CVE-2019-18857

CVE-2019-18857 is a high-severity vulnerability in Svg-sanitizer Project Svg-sanitizer with a CVSS 3.x base score of 7.5. 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-79.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Svg-sanitizer Project Svg-sanitizer
Published: 2019-11-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2019-18857?: 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.
How severe is CVE-2019-18857?: CVE-2019-18857 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-18857 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18857?: CVE-2019-18857 affects Svg-sanitizer Project Svg-sanitizer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18857?: 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-2019-18857 published?: CVE-2019-18857 was published on 2019-11-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:svg-sanitizer_project:svg-sanitizer:*:*:*:*:*:*:*:*

More vulnerabilities in Svg-sanitizer Project Svg-sanitizer

CVE-2022-23638 — Medium (CVSS 6.2): svg-sanitizer is a SVG/XML sanitizer written in PHP. A cross-site scripting vulnerability impacts all users of the…
CVE-2019-10772 — Medium (CVSS 6.1): It is possible to bypass enshrined/svg-sanitize before 0.13.1 using the "xlink:href" attribute due to mishandling of…

All CVEs affecting Svg-sanitizer Project Svg-sanitizer →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →