CVE-2026-11877: An unauthorized user can modify configuration through API calls that affects the OpenText Access Manager. This

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-11877 is a high-severity flaw (CVSS 7.5) affecting access manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An unauthorized user can modify configuration through API calls that affects the OpenText Access Manager. This issue affects Access Manager before 5.1.3.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-648
Published	2026-06-24
Last modified	2026-10-25

Publisher (CNA): OpenText · Vendor: microfocus

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-24 15:16 UTCPublished CVE record published
2026-10-25 22:10 UTCUpdated Record last modified

microfocus access manager UPGRADE

Affected: >= 5.0 and < 5.1 · 5.1 · 5.1 patch_update_2

Fixed in: 5.1

Safe to downgrade to: a release before 5.0

1. Check installed version

apt-cache policy access-manager || rpm -q access-manager || access-manager --version

2. UPGRADE to 5.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade access-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade access-manager

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 5.0 (Debian / Ubuntu)

apt-cache madison access-manager sudo apt install access-manager=<VERSION_BEFORE_5.0> sudo apt-mark hold access-manager

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

dnf --showduplicates list access-manager sudo dnf downgrade access-manager-<VERSION_BEFORE_5.0> sudo dnf versionlock add access-manager

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-2026-11877?

access manager: upgrade to 5.1. Exact commands for each OS are on this page.

Is CVE-2026-11877 being exploited?

CVE-2026-11877 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-2026-11877 affect?

CVE-2026-11877 affects access manager. Severity is high (CVSS 7.5). An unauthorized user can modify configuration through API calls that affects the OpenText Access Manager. This issue affects Access Manager before 5.1.3.

How urgent is CVE-2026-11877?

Priority 37/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-35313 CRITICAL 9.9 DOWNGRADE Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engi
CVE-2026-35314 HIGH 7.3 DOWNGRADE Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Web Server Plugin)
CVE-2026-35261 MEDIUM 6.5 DOWNGRADE Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engi
CVE-2026-46812 MEDIUM 6.1 DOWNGRADE Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engi
CVE-2026-11878 MEDIUM 6.1 UPGRADE Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in OpenText

References

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