Technology · PyPI
bleach (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 10 vulnerabilities in bleach (PyPI): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, Mozilla Bleach XSS via unsanitized formaction attribute, was published on 16 June 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About bleach (PyPI)
A Python library that provides an allowed-list-based HTML sanitizing tool.
Latest bleach (PyPI) vulnerabilities
- Mozilla Bleach XSS via unsanitized formaction attributemediumCVSS 6.1
- Mozilla Bleach ReDoS in linkify with parse_email enabledmediumCVSS 4.3
- Mozilla Bleach URI sanitization bypass via Unicode characterslowCVSS 0
- CVE-2021-23980: Cross-site scripting in BleachlowCVSS 3.1EPSS 0.5%
- bleach cross-site scripting in HTML sanitizationinfoCVSS 6.1
- CVE-2014-8881: bleach regular expression denial of servicelowCVSS 3.1
- CVE-2020-6817: regular expression denial-of-service (ReDoS) in BleachlowCVSS 3.1EPSS 0.7%
- CVE-2020-6816: Bleach vulnerable to mutation XSS via whitelisted math or svg and raw taglowCVSS 3.1EPSS 1.3%
- CVE-2020-6802: XSS in Bleach when noscript and raw tag whitelistedlowCVSS 3.1EPSS 1.7%
- CVE-2018-7753: Bleach URI Scheme Restriction BypasslowCVSS 3EPSS 2.2%
Most severe bleach (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- Mozilla Bleach XSS via unsanitized formaction attributemediumCVSS 6.1
- Mozilla Bleach ReDoS in linkify with parse_email enabledmediumCVSS 4.3
- CVE-2020-6802: XSS in Bleach when noscript and raw tag whitelistedlowCVSS 3.1EPSS 1.7%
- CVE-2020-6816: Bleach vulnerable to mutation XSS via whitelisted math or svg and raw taglowCVSS 3.1EPSS 1.3%
- CVE-2020-6817: regular expression denial-of-service (ReDoS) in BleachlowCVSS 3.1EPSS 0.7%
- CVE-2021-23980: Cross-site scripting in BleachlowCVSS 3.1EPSS 0.5%
- CVE-2014-8881: bleach regular expression denial of servicelowCVSS 3.1
- CVE-2018-7753: Bleach URI Scheme Restriction BypasslowCVSS 3EPSS 2.2%
- Mozilla Bleach URI sanitization bypass via Unicode characterslowCVSS 0
- bleach cross-site scripting in HTML sanitizationinfoCVSS 6.1
Vulnerabilities per week
Nothing was published in the last eight weeks. 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 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many bleach (PyPI) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/bleach)<a href="https://junglewise.ai/threats/technologies/bleach"><img src="https://junglewise.ai/threats/technologies/bleach/badge.svg" alt="bleach (PyPI) 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/bleach.json, and this page as text at https://junglewise.ai/threats/technologies/bleach.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, "bleach (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/bleach, 13 November 2026.