# bleach (PyPI) vulnerabilities Source: https://junglewise.ai/threats/technologies/bleach Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/bleach.json License: CC BY 4.0 with a link back 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. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 10 (0 critical, 0 exploited in the wild) ## 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 attribute](https://junglewise.ai/threats/mozilla-bleach-xss-via-unsanitized-formaction-attribute-604755fa) (medium, CVSS 6.1, published 16 Jun 2026) - [Mozilla Bleach ReDoS in linkify with parse_email enabled](https://junglewise.ai/threats/mozilla-bleach-redos-in-linkify-with-parse-email-enabled-47729578) (medium, CVSS 4.3, published 16 Jun 2026) - [Mozilla Bleach URI sanitization bypass via Unicode characters](https://junglewise.ai/threats/mozilla-bleach-uri-sanitization-bypass-via-unicode-characters-79149728) (low, CVSS 0, published 16 Jun 2026) - [CVE-2021-23980: Cross-site scripting in Bleach](https://junglewise.ai/threats/cve-2021-23980-cross-site-scripting-in-bleach) (low, CVSS 3.1, published 2 Feb 2021) - [bleach cross-site scripting in HTML sanitization](https://junglewise.ai/threats/bleach-cross-site-scripting-in-html-sanitization-17455ea4) (info, CVSS 6.1, published 3 Sep 2020) - [CVE-2014-8881: bleach regular expression denial of service](https://junglewise.ai/threats/cve-2014-8881-bleach-regular-expression-denial-of-service) (low, CVSS 3.1, published 1 Sep 2020) - [CVE-2020-6817: regular expression denial-of-service (ReDoS) in Bleach](https://junglewise.ai/threats/cve-2020-6817-regular-expression-denial-of-service-redos-in-bleach) (low, CVSS 3.1, published 30 Mar 2020) - [CVE-2020-6816: Bleach vulnerable to mutation XSS via whitelisted math or svg and raw tag](https://junglewise.ai/threats/cve-2020-6816-bleach-vulnerable-to-mutation-xss-via-whitelisted-math-or-svg-and) (low, CVSS 3.1, published 24 Mar 2020) - [CVE-2020-6802: XSS in Bleach when noscript and raw tag whitelisted](https://junglewise.ai/threats/cve-2020-6802-xss-in-bleach-when-noscript-and-raw-tag-whitelisted) (low, CVSS 3.1, published 24 Mar 2020) - [CVE-2018-7753: Bleach URI Scheme Restriction Bypass](https://junglewise.ai/threats/cve-2018-7753-bleach-uri-scheme-restriction-bypass) (low, CVSS 3, published 7 Mar 2018) ## Most severe bleach (PyPI) vulnerabilities - [Mozilla Bleach XSS via unsanitized formaction attribute](https://junglewise.ai/threats/mozilla-bleach-xss-via-unsanitized-formaction-attribute-604755fa) (medium, CVSS 6.1, published 16 Jun 2026) - [Mozilla Bleach ReDoS in linkify with parse_email enabled](https://junglewise.ai/threats/mozilla-bleach-redos-in-linkify-with-parse-email-enabled-47729578) (medium, CVSS 4.3, published 16 Jun 2026) - [CVE-2020-6802: XSS in Bleach when noscript and raw tag whitelisted](https://junglewise.ai/threats/cve-2020-6802-xss-in-bleach-when-noscript-and-raw-tag-whitelisted) (low, CVSS 3.1, published 24 Mar 2020) - [CVE-2020-6816: Bleach vulnerable to mutation XSS via whitelisted math or svg and raw tag](https://junglewise.ai/threats/cve-2020-6816-bleach-vulnerable-to-mutation-xss-via-whitelisted-math-or-svg-and) (low, CVSS 3.1, published 24 Mar 2020) - [CVE-2020-6817: regular expression denial-of-service (ReDoS) in Bleach](https://junglewise.ai/threats/cve-2020-6817-regular-expression-denial-of-service-redos-in-bleach) (low, CVSS 3.1, published 30 Mar 2020) - [CVE-2021-23980: Cross-site scripting in Bleach](https://junglewise.ai/threats/cve-2021-23980-cross-site-scripting-in-bleach) (low, CVSS 3.1, published 2 Feb 2021) - [CVE-2014-8881: bleach regular expression denial of service](https://junglewise.ai/threats/cve-2014-8881-bleach-regular-expression-denial-of-service) (low, CVSS 3.1, published 1 Sep 2020) - [CVE-2018-7753: Bleach URI Scheme Restriction Bypass](https://junglewise.ai/threats/cve-2018-7753-bleach-uri-scheme-restriction-bypass) (low, CVSS 3, published 7 Mar 2018) - [Mozilla Bleach URI sanitization bypass via Unicode characters](https://junglewise.ai/threats/mozilla-bleach-uri-sanitization-bypass-via-unicode-characters-79149728) (low, CVSS 0, published 16 Jun 2026) - [bleach cross-site scripting in HTML sanitization](https://junglewise.ai/threats/bleach-cross-site-scripting-in-html-sanitization-17455ea4) (info, CVSS 6.1, published 3 Sep 2020) ## Vulnerabilities per week Nothing was published in the last eight weeks. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other PyPI technologies - [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow): 435 vulnerabilities - [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu): 430 vulnerabilities - [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu): 427 vulnerabilities - [open-webui (PyPI)](https://junglewise.ai/threats/technologies/open-webui): 177 vulnerabilities - [Django (PyPI)](https://junglewise.ai/threats/technologies/django): 173 vulnerabilities - [apache-airflow (PyPI)](https://junglewise.ai/threats/technologies/apache-airflow): 159 vulnerabilities - [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow): 125 vulnerabilities - [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai): 120 vulnerabilities - [vllm (PyPI)](https://junglewise.ai/threats/technologies/pypi-vllm): 117 vulnerabilities - [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone): 101 vulnerabilities - [mlflow (PyPI)](https://junglewise.ai/threats/technologies/mlflow): 88 vulnerabilities - [picklescan (PyPI)](https://junglewise.ai/threats/technologies/picklescan): 86 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "bleach (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/bleach, 13 November 2026.