CVE-2025-2833: A vulnerability was found in zhangyd-c OneBlog up to 2.3.9

Q: How do I fix CVE-2025-2833?

oneblog: upgrade to newer than 2.3.9. Exact commands for each OS are on this page.

Q: Is CVE-2025-2833 being exploited?

CVE-2025-2833 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-2025-2833 affect?

CVE-2025-2833 affects oneblog. Severity is medium (CVSS 5.3). A vulnerability was found in zhangyd-c OneBlog up to 2.3.9. It has been classified as problematic. Affected is an unknown function of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to inefficient r

Q: How urgent is CVE-2025-2833?

Priority 42/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2025-2833 is a medium-severity flaw (CVSS 5.3) affecting oneblog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in zhangyd-c OneBlog up to 2.3.9. It has been classified as problematic. Affected is an unknown function of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-400, CWE-1333
Published	2025-03-27
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: zhyd

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

Am I affected?

Timeline

2025-03-27 04:15 UTCPublished CVE record published
2026-06-17 09:07 UTCUpdated Record last modified

zhyd oneblog UPGRADE

Affected: <= 2.3.9

Fixed in: newer than 2.3.9

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.3.9 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade oneblog

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-2025-2833?

oneblog: upgrade to newer than 2.3.9. Exact commands for each OS are on this page.

Is CVE-2025-2833 being exploited?

CVE-2025-2833 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-2025-2833 affect?

CVE-2025-2833 affects oneblog. Severity is medium (CVSS 5.3). A vulnerability was found in zhangyd-c OneBlog up to 2.3.9. It has been classified as problematic. Affected is an unknown function of the component HTTP Header Handler. The manipulation of the argument X-Forwarded-For leads to inefficient r

How urgent is CVE-2025-2833?

Priority 42/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-60355 CRITICAL 9.8 UPGRADE zhangyd-c OneBlog v2.3.9 and before was vulnerable to SSTI (Server-Side Template Injection) via FreeMarker tem
CVE-2025-56264 HIGH 7.5 DOWNGRADE The /api/comment endpoint in zhangyd-c OneBlog 2.3.9 contains a denial-of-service vulnerability.
CVE-2025-2835 MEDIUM 4.3 UPGRADE A vulnerability was found in zhangyd-c OneBlog up to 2.3.9
CVE-2024-54954 HIGH 8.0 UPGRADE OneBlog v2.3.6 was discovered to contain a template injection vulnerability via the template management depart
CVE-2024-29474 MEDIUM 5.4 DOWNGRADE OneBlog v2.3.4 was discovered to contain a stored cross-site scripting (XSS) vulnerability via the User Manage

References

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