Technology · Symfony
Symfony HtmlSanitizer vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 9 vulnerabilities in Symfony HtmlSanitizer: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-121949, was published on 5 November 2026. 3 vulnerabilities in the last four weeks, up from none in the four before.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 0
- Exploited in the wild
- 0
About Symfony HtmlSanitizer
HtmlSanitizer is a Symfony component that provides an object-oriented API to clean untrusted HTML input.
Latest Symfony HtmlSanitizer vulnerabilities
- CVE-2026-121949: Symfony HtmlSanitizer media URL policy bypass in srcset attributesinfo
- CVE-2026-118517: Symfony HtmlSanitizer UrlSanitizer host allowlist bypassmediumCVSS 4.3
- CVE-2026-121373: Symfony HtmlSanitizer meta refresh URL sanitization bypassinfo
- CVE-2026-48761: Symfony HtmlSanitizer XSS via incomplete URL attribute sanitizationmediumCVSS 4EPSS 0.4%
- CVE-2026-48760: Symfony HtmlSanitizer visual spoofing via percent-encoded BiDi charactersmediumCVSS 0EPSS 0.3%
- CVE-2026-45753: Symfony HtmlSanitizer XSS via incomplete URL attribute listmediumCVSS 4EPSS 0.3%
- CVE-2026-45064: Symfony HtmlSanitizer visual spoofing via BiDi override charactersmediumCVSS 4EPSS 0.3%
- CVE-2026-45066: Symfony HtmlSanitizer URL allowlist bypass in URL parsermediumCVSS 0EPSS 0.3%
- CVE-2025-29771: Jitbit HtmlSanitizer XSS in contentEditable handlingmediumCVSS 4EPSS 0.4%
Most severe Symfony HtmlSanitizer vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-118517: Symfony HtmlSanitizer UrlSanitizer host allowlist bypassmediumCVSS 4.3
- CVE-2025-29771: Jitbit HtmlSanitizer XSS in contentEditable handlingmediumCVSS 4EPSS 0.4%
- CVE-2026-48761: Symfony HtmlSanitizer XSS via incomplete URL attribute sanitizationmediumCVSS 4EPSS 0.4%
- CVE-2026-45753: Symfony HtmlSanitizer XSS via incomplete URL attribute listmediumCVSS 4EPSS 0.3%
- CVE-2026-45064: Symfony HtmlSanitizer visual spoofing via BiDi override charactersmediumCVSS 4EPSS 0.3%
- CVE-2026-48760: Symfony HtmlSanitizer visual spoofing via percent-encoded BiDi charactersmediumCVSS 0EPSS 0.3%
- CVE-2026-45066: Symfony HtmlSanitizer URL allowlist bypass in URL parsermediumCVSS 0EPSS 0.3%
- CVE-2026-121949: Symfony HtmlSanitizer media URL policy bypass in srcset attributesinfo
- CVE-2026-121373: Symfony HtmlSanitizer meta refresh URL sanitization bypassinfo
Vulnerabilities per week
3 vulnerabilities in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 3 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Symfony HtmlSanitizer vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/htmlsanitizer)<a href="https://junglewise.ai/threats/technologies/htmlsanitizer"><img src="https://junglewise.ai/threats/technologies/htmlsanitizer/badge.svg" alt="Symfony HtmlSanitizer vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/htmlsanitizer.json, and this page as text at https://junglewise.ai/threats/technologies/htmlsanitizer.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Symfony HtmlSanitizer vulnerabilities", https://junglewise.ai/threats/technologies/htmlsanitizer, 13 November 2026.