CVE-2015-3983: The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not include the HTTPOnly flag in a Set-Cookie header, wh

Q: How do I fix CVE-2015-3983?

pacemaker configuration system: upgrade to newer than 0.9.137. Exact commands for each OS are on this page.

Q: Is CVE-2015-3983 being exploited?

CVE-2015-3983 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-2015-3983 affect?

CVE-2015-3983 affects pacemaker configuration system. Severity is medium (CVSS 4.3). The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not include the HTTPOnly flag in a Set-Cookie header, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie. NOTE: this

Q: How urgent is CVE-2015-3983?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2015-3983 is a medium-severity flaw (CVSS 4.3) affecting pacemaker configuration system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not include the HTTPOnly flag in a Set-Cookie header, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie. NOTE: this issue was SPLIT from CVE-2015-1848 per ADT2 due to different vulnerability types.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-310
Published	2015-05-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fedora

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

Am I affected?

Timeline

2015-05-14 14:59 UTCPublished CVE record published
2026-06-17 00:26 UTCUpdated Record last modified

fedora pacemaker configuration system UPGRADE

Affected: <= 0.9.137

Fixed in: newer than 0.9.137

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pacemaker-configuration-system || rpm -q pacemaker-configuration-system || pacemaker-configuration-system --version

2. UPGRADE to newer than 0.9.137 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pacemaker-configuration-system

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pacemaker-configuration-system

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-2015-3983?

pacemaker configuration system: upgrade to newer than 0.9.137. Exact commands for each OS are on this page.

Is CVE-2015-3983 being exploited?

CVE-2015-3983 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-2015-3983 affect?

CVE-2015-3983 affects pacemaker configuration system. Severity is medium (CVSS 4.3). The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not include the HTTPOnly flag in a Set-Cookie header, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie. NOTE: this

How urgent is CVE-2015-3983?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2015-1848 MEDIUM 6.8 UPGRADE MITIGATE The pcs daemon (pcsd) in PCS 0.9.137 and earlier does not set the secure flag for a cookie in an https session

References

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