CVE-2023-45835: Unauth

Q: How do I fix CVE-2023-45835?

libsyn publisher hub: upgrade to newer than 1.4.4. Exact commands for each OS are on this page.

Q: Is CVE-2023-45835 being exploited?

CVE-2023-45835 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-2023-45835 affect?

CVE-2023-45835 affects libsyn publisher hub. Severity is high (CVSS 7.1). Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Libsyn Libsyn Publisher Hub plugin <= 1.4.4 versions.

Routine

HIGH 7.1UPGRADE

CVE-2023-45835 is a high-severity flaw (CVSS 7.1) affecting libsyn publisher hub. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Libsyn Libsyn Publisher Hub plugin <= 1.4.4 versions.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-10-25
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: libsyn

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

Am I affected?

Timeline

2023-10-25 18:17 UTCPublished CVE record published
2026-06-17 06:29 UTCUpdated Record last modified

libsyn libsyn publisher hub UPGRADE

Affected: <= 1.4.4

Fixed in: newer than 1.4.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libsyn-publisher-hub || rpm -q libsyn-publisher-hub || libsyn-publisher-hub --version

2. UPGRADE to newer than 1.4.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libsyn-publisher-hub

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libsyn-publisher-hub

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-2023-45835?

libsyn publisher hub: upgrade to newer than 1.4.4. Exact commands for each OS are on this page.

Is CVE-2023-45835 being exploited?

CVE-2023-45835 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-2023-45835 affect?

CVE-2023-45835 affects libsyn publisher hub. Severity is high (CVSS 7.1). Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Libsyn Libsyn Publisher Hub plugin <= 1.4.4 versions.

How urgent is CVE-2023-45835?

Priority 36/100. High severity

Related CVEs

CVE-2024-32140 MEDIUM 6.5 UPGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in libsyn L
CVE-2023-45834 MEDIUM 5.3 UPGRADE Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Libsyn Libsyn Publisher Hub.This i
CVE-2023-25057 MEDIUM 5.3 UPGRADE Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Libsyn Libsyn Publisher Hub.This i

References

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