CVE-2018-16139: Cross-site scripting (XSS) vulnerability in BIBLIOsoft BIBLIOpac 2008 allows remote attackers to inject arbitr

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MEDIUM 6.1DOWNGRADE

CVE-2018-16139 is a medium-severity flaw (CVSS 6.1) affecting bibliopac. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in BIBLIOsoft BIBLIOpac 2008 allows remote attackers to inject arbitrary web script or HTML via the db or action parameter to to bin/wxis.exe/bibliopac/.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-05-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bibliosoft

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

Am I affected?

Timeline

2019-05-13 20:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

bibliosoft bibliopac DOWNGRADE

Affected: 2008

Fixed in: no fixed release known

Safe to downgrade to: a release before 2008

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2008 (Debian / Ubuntu)

apt-cache madison bibliopac sudo apt install bibliopac=<VERSION_BEFORE_2008> sudo apt-mark hold bibliopac

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

dnf --showduplicates list bibliopac sudo dnf downgrade bibliopac-<VERSION_BEFORE_2008> sudo dnf versionlock add bibliopac

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: BIBLIOsoft BIBLIOpac 2008 - Cross-Site Scripting

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-2018-16139?

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

Is CVE-2018-16139 being exploited?

CVE-2018-16139 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-2018-16139 affect?

CVE-2018-16139 affects bibliopac. Severity is medium (CVSS 6.1). Cross-site scripting (XSS) vulnerability in BIBLIOsoft BIBLIOpac 2008 allows remote attackers to inject arbitrary web script or HTML via the db or action parameter to to bin/wxis.exe/bibliopac/.

How urgent is CVE-2018-16139?

Priority 47/100. Public exploit reference

References

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