CVE-2025-3026: The vulnerability exists in the EJBCA service, version 8.0 Enterprise

Routine

MEDIUM 6.1UPGRADE

CVE-2025-3026 is a medium-severity flaw (CVSS 6.1) affecting ejbca. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The vulnerability exists in the EJBCA service, version 8.0 Enterprise. Not tested in higher versions. By modifying the ‘Host’ header in an HTTP request, it is possible to manipulate the generated links and thus redirect the client to a different base URL. In this way, an attacker could insert his own server for the client to send HTTP requests, provided he succeeds in exploiting it.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-74
Published	2025-03-31
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: primekey

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

Am I affected?

Timeline

2025-03-31 11:15 UTCPublished CVE record published
2026-06-17 09:19 UTCUpdated Record last modified

primekey ejbca UPGRADE

Affected: >= 8.0 and < 9.1

Fixed in: 9.1

Safe to downgrade to: a release before 8.0

1. Check installed version

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

2. UPGRADE to 9.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ejbca

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ejbca

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 8.0 (Debian / Ubuntu)

apt-cache madison ejbca sudo apt install ejbca=<VERSION_BEFORE_8.0> sudo apt-mark hold ejbca

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ejbca sudo dnf downgrade ejbca-<VERSION_BEFORE_8.0> sudo dnf versionlock add ejbca

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-2025-3026?

ejbca: upgrade to 9.1. Exact commands for each OS are on this page.

Is CVE-2025-3026 being exploited?

CVE-2025-3026 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-2025-3026 affect?

CVE-2025-3026 affects ejbca. Severity is medium (CVSS 6.1). The vulnerability exists in the EJBCA service, version 8.0 Enterprise. Not tested in higher versions. By modifying the ‘Host’ header in an HTTP request, it is possible to manipulate the generated links and thus redirect the client to a diff

How urgent is CVE-2025-3026?

Priority 25/100. No elevated risk signals yet.

Related CVEs

CVE-2025-3027 MEDIUM 6.1 UPGRADE The vulnerability exists in the EJBCA service, version 8.0 Enterprise

References

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