CVE-2023-28628: lambdaisland/uri is a pure Clojure/ClojureScript URI library

Q: How do I fix CVE-2023-28628?

uri: upgrade to 1.14.120. Exact commands for each OS are on this page.

Q: Is CVE-2023-28628 being exploited?

CVE-2023-28628 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-28628 affect?

CVE-2023-28628 affects uri. Severity is medium (CVSS 5.4). lambdaisland/uri is a pure Clojure/ClojureScript URI library. In versions prior to 1.14.120 `authority-regex` allows an attacker to send malicious URLs to be parsed by the `lambdaisland/uri` and return the wrong authority. This issue is sim

Q: How urgent is CVE-2023-28628?

Priority 35/100. Public exploit reference

Routine

MEDIUM 5.4UPGRADE

CVE-2023-28628 is a medium-severity flaw (CVSS 5.4) affecting uri. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

lambdaisland/uri is a pure Clojure/ClojureScript URI library. In versions prior to 1.14.120 `authority-regex` allows an attacker to send malicious URLs to be parsed by the `lambdaisland/uri` and return the wrong authority. This issue is similar to but distinct from CVE-2020-8910. The regex in question doesn't handle the backslash (`\`) character in the username correctly, leading to a wrong output. ex. a payload of `https://example.com\\@google.c

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-706, CWE-601
Published	2023-03-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: lambdaisland

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-03-27 21:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

lambdaisland uri UPGRADE

Affected: < 1.14.120

Fixed in: 1.14.120

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy uri || rpm -q uri || uri --version

2. UPGRADE to 1.14.120 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade uri

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade uri

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28628?

uri: upgrade to 1.14.120. Exact commands for each OS are on this page.

Is CVE-2023-28628 being exploited?

CVE-2023-28628 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28628 affect?

CVE-2023-28628 affects uri. Severity is medium (CVSS 5.4). lambdaisland/uri is a pure Clojure/ClojureScript URI library. In versions prior to 1.14.120 `authority-regex` allows an attacker to send malicious URLs to be parsed by the `lambdaisland/uri` and return the wrong authority. This issue is sim

How urgent is CVE-2023-28628?

Priority 35/100. Public exploit reference

Related CVEs

CVE-2025-61594 HIGH 7.5 UPGRADE URI is a module providing classes to handle Uniform Resource Identifiers
CVE-2025-27221 LOW 3.2 UPGRADE In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadverten
CVE-2023-36617 MEDIUM 5.3 UPGRADE A ReDoS issue was discovered in the URI component before 0.12.2 for Ruby
CVE-2023-28755 MEDIUM 5.3 UPGRADE MITIGATE A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1

References

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