CVE-2025-8838: A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8

This week

HIGH 7.3REMOTEDOWNGRADE

CVE-2025-8838 is a high-severity flaw (CVSS 7.3) affecting my-site. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8. This vulnerability affects the function preHandle of the file /admin/ of the component Backend Interface. The manipulation of the argument uri leads to improper authentication. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment

Why this priority

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

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-287
Published	2025-08-11
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: winterchens

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

Am I affected?

Timeline

2025-08-11 09:15 UTCPublished CVE record published
2026-06-17 10:07 UTCUpdated Record last modified

winterchens my-site DOWNGRADE

Affected: 2025-06-11

Fixed in: no fixed release known

Safe to downgrade to: a release before 2025-06-11

1. Check installed version

apt-cache policy my-site || rpm -q my-site || my-site --version

2. No fixed release: DOWNGRADE to a release before 2025-06-11 (Debian / Ubuntu)

apt-cache madison my-site sudo apt install my-site=<VERSION_BEFORE_2025-06-11> sudo apt-mark hold my-site

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list my-site sudo dnf downgrade my-site-<VERSION_BEFORE_2025-06-11> sudo dnf versionlock add my-site

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-8838?

my-site: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-8838 being exploited?

CVE-2025-8838 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-2025-8838 affect?

CVE-2025-8838 affects my-site. Severity is high (CVSS 7.3). A vulnerability has been found in WinterChenS my-site up to 1f7525f15934d9d6a278de967f6ec9f1757738d8. This vulnerability affects the function preHandle of the file /admin/ of the component Backend Interface. The manipulation of the argument

How urgent is CVE-2025-8838?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-50904 CRITICAL 9.8 UPGRADE There is an authentication bypass vulnerability in WinterChenS my-site thru commit 6c79286 (2025-06-11)
CVE-2024-57152 HIGH 7.5 DOWNGRADE Incorrect access control in the preHandle function of my-site v1.0.2 allows attackers to access sensitive comp
CVE-2024-53496 CRITICAL 9.8 DOWNGRADE Incorrect access control in the doFilter function of my-site v1.0.2.RELEASE allows attackers to access sensiti
CVE-2024-53495 HIGH 7.5 DOWNGRADE Incorrect access control in the preHandle function of my-site v1.0.2.RELEASE allows attackers to access sensit

References

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