Vulnerability Report

CVE-2023-28755

Title: ReDoS in Ruby URI component

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2023-28755.

CWE Category CWE-1333
Published Date Mar 31, 2023
Modified Date Nov 04, 2025
Exploit Status Not Found
Score 5.3 CVSS v3.1
Exploit Probability (EPSS)
0.34%

Vulnerability Summary

CVE-2023-28755: A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1.

Impacted Vendors

L
lambdaisland 1
R
ruby-lang 1

Reference Links

https://github.com/ruby/uri/releases/ https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFZANOQA4RYX7XCB42OO3P24DQKWHEKA/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G76GZG3RAGYF4P75YY7J7TGYAU7Z5E2T/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QA6XUKUY7B5OLNQBLHOT43UW7C5NIOQQ/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMIOPLBAAM3FEQNAXA2L7BDKOGSVUT5Z/ https://security.gentoo.org/glsa/202401-27 https://security.netapp.com/advisory/ntap-20230526-0003/ https://www.ruby-lang.org/en/downloads/releases/ https://www.ruby-lang.org/en/news/2022/12/25/ruby-3-2-0-released/ https://www.ruby-lang.org/en/news/2023/03/28/redos-in-uri-cve-2023-28755/ https://github.com/ruby/uri/releases/ https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFZANOQA4RYX7XCB42OO3P24DQKWHEKA/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G76GZG3RAGYF4P75YY7J7TGYAU7Z5E2T/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QA6XUKUY7B5OLNQBLHOT43UW7C5NIOQQ/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WMIOPLBAAM3FEQNAXA2L7BDKOGSVUT5Z/ https://lists.fedoraproject.org/archives/list/[email protected]/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/ https://security.gentoo.org/glsa/202401-27 https://security.netapp.com/advisory/ntap-20230526-0003/ https://www.ruby-lang.org/en/downloads/releases/ https://www.ruby-lang.org/en/news/2022/12/25/ruby-3-2-0-released/ https://www.ruby-lang.org/en/news/2023/03/28/redos-in-uri-cve-2023-28755/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity MEDIUM
5.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-28755 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Stack

No specific products linked.