High
prototypejs — security advisory
An issue was discovered in the stripTags and unescapeHTML components in Prototype 1.7.3 where an attacker can cause a Regular Expression Denial of Service (ReDOS) through stripping crafted HTML tags.
- Products
- prototypejs
- Affected versions
- 1.7.1-3, 1.7.1-3.1, 1.7.3-1, 1.7.3-2, 1.7.3-2build1
- Fixed versions
- Not specified
- CVEs
- CVE-2020-27511
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:51 UTC · Revision 1
Source evidence
An issue was discovered in the stripTags and unescapeHTML components in Prototype 1.7.3 where an attacker can cause a Regular Expression Denial of Service (ReDOS) through stripping crafted HTML tags.
osv:UBUNTU-CVE-2020-27511
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
prototypejs
Fixed versions: Not specified
Complete source record
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"https://github.com/yetingli/PoCs/blob/main/CVE-2020-27511/Prototype.md",
"https://github.com/prototypejs/prototype/blob/dee2f7d8611248abce81287e1be4156011953c90/src/prototype/lang/string.js#L283",
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