Vulnerability Details : CVE-2020-27511
Potential exploit
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-27511
- cpe:2.3:a:prototypejs:prototype:1.7.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27511
0.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27511
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
References for CVE-2020-27511
-
https://github.com/yetingli/PoCs/blob/main/CVE-2020-27511/Prototype.md
PoCs/Prototype.md at main · yetingli/PoCs · GitHubExploit;Third Party Advisory
-
https://github.com/prototypejs/prototype/blob/dee2f7d8611248abce81287e1be4156011953c90/src/prototype/lang/string.js#L283
prototype/string.js at dee2f7d8611248abce81287e1be4156011953c90 · prototypejs/prototype · GitHubExploit;Third Party Advisory
-
http://prototypejs.org/
Prototype JavaScript framework: a foundation for ambitious web applicationsVendor Advisory
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