CVE-2018-17090: An issue was discovered in DonLinkage 6.6.8

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-17090 is a medium-severity flaw (CVSS 5.4) affecting donlinkage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in DonLinkage 6.6.8. The modules /pages/bazy/bazy_adresow.php and /pages/proxy/add.php are vulnerable to stored XSS that can be triggered by closing <textarea> followed by <script></script> tags.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-09-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: i4a

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

Am I affected?

Timeline

2018-09-16 21:29 UTCPublished CVE record published
2026-06-17 01:45 UTCUpdated Record last modified

i4a donlinkage DOWNGRADE

Affected: 6.6.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.6.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.6.8 (Debian / Ubuntu)

apt-cache madison donlinkage sudo apt install donlinkage=<VERSION_BEFORE_6.6.8> sudo apt-mark hold donlinkage

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

dnf --showduplicates list donlinkage sudo dnf downgrade donlinkage-<VERSION_BEFORE_6.6.8> sudo dnf versionlock add donlinkage

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-2018-17090?

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

Is CVE-2018-17090 being exploited?

CVE-2018-17090 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-2018-17090 affect?

CVE-2018-17090 affects donlinkage. Severity is medium (CVSS 5.4). An issue was discovered in DonLinkage 6.6.8. The modules /pages/bazy/bazy_adresow.php and /pages/proxy/add.php are vulnerable to stored XSS that can be triggered by closing <textarea> followed by <script></script> tags.

How urgent is CVE-2018-17090?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-17092 MEDIUM 5.4 DOWNGRADE An issue was discovered in DonLinkage 6.6.8
CVE-2018-17091 MEDIUM 5.4 DOWNGRADE An issue was discovered in DonLinkage 6.6.8

References

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