CVE-2018-17091: An issue was discovered in DonLinkage 6.6.8

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-17091 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. It allows remote attackers to obtain potentially sensitive information via a direct request for files/temporary.txt.

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	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-200
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-2018-17091?

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

Is CVE-2018-17091 being exploited?

CVE-2018-17091 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-2018-17091 affect?

CVE-2018-17091 affects donlinkage. Severity is medium (CVSS 5.4). An issue was discovered in DonLinkage 6.6.8. It allows remote attackers to obtain potentially sensitive information via a direct request for files/temporary.txt.

How urgent is CVE-2018-17091?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2018-17092 MEDIUM 5.4 DOWNGRADE An issue was discovered in DonLinkage 6.6.8
CVE-2018-17090 MEDIUM 5.4 DOWNGRADE An issue was discovered in DonLinkage 6.6.8

References

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