CVE-2021-21275: The MediaWiki "Report" extension has a Cross-Site Request Forgery (CSRF) vulnerability

Routine

MEDIUM 5.3REMOTEUPGRADEDOWNGRADEDOWNGRADE

CVE-2021-21275 is a medium-severity flaw (CVSS 5.3) affecting report, communications cloud native core network slice selection function, communications pricing design center. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The MediaWiki "Report" extension has a Cross-Site Request Forgery (CSRF) vulnerability. Before fixed version, there was no protection against CSRF checks on Special:Report, so requests to report a revision could be forged. The problem has been fixed in commit f828dc6 by making use of MediaWiki edit tokens.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-352
Published	2021-01-25
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: oracle · report project

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

Am I affected?

Timeline

2021-01-25 23:15 UTCPublished CVE record published
2026-06-17 03:35 UTCUpdated Record last modified

report project report UPGRADE

Affected: < 2021-01-21

Fixed in: 2021-01-21

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2021-01-21 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade report

Note

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

oracle communications cloud native core network slice selection function DOWNGRADE

Affected: 1.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.1

1. Check installed version

apt-cache policy communications-cloud-native-core-network-slice-selection-function || rpm -q communications-cloud-native-core-network-slice-selection-function || communications-cloud-native-core-network-slice-selection-function --version

2. No fixed release: DOWNGRADE to a release before 1.2.1 (Debian / Ubuntu)

apt-cache madison communications-cloud-native-core-network-slice-selection-function sudo apt install communications-cloud-native-core-network-slice-selection-function=<VERSION_BEFORE_1.2.1> sudo apt-mark hold communications-cloud-native-core-network-slice-selection-function

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

dnf --showduplicates list communications-cloud-native-core-network-slice-selection-function sudo dnf downgrade communications-cloud-native-core-network-slice-selection-function-<VERSION_BEFORE_1.2.1> sudo dnf versionlock add communications-cloud-native-core-network-slice-selection-function

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.

oracle communications pricing design center DOWNGRADE

Affected: 12.0.0.4.0 · 12.0.0.5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.0.0.4.0

1. Check installed version

apt-cache policy communications-pricing-design-center || rpm -q communications-pricing-design-center || communications-pricing-design-center --version

2. No fixed release: DOWNGRADE to a release before 12.0.0.4.0 (Debian / Ubuntu)

apt-cache madison communications-pricing-design-center sudo apt install communications-pricing-design-center=<VERSION_BEFORE_12.0.0.4.0> sudo apt-mark hold communications-pricing-design-center

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

dnf --showduplicates list communications-pricing-design-center sudo dnf downgrade communications-pricing-design-center-<VERSION_BEFORE_12.0.0.4.0> sudo dnf versionlock add communications-pricing-design-center

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-2021-21275?

report: upgrade to 2021-01-21; communications cloud native core network slice selection function: downgrade or apply the listed mitigation; communications pricing design center: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-21275 being exploited?

CVE-2021-21275 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-2021-21275 affect?

CVE-2021-21275 affects report, communications cloud native core network slice selection function, communications pricing design center. Severity is medium (CVSS 5.3). The MediaWiki "Report" extension has a Cross-Site Request Forgery (CSRF) vulnerability. Before fixed version, there was no protection against CSRF checks on Special:Report, so requests to report a revision could be forged. The problem has b

How urgent is CVE-2021-21275?

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

Related CVEs

CVE-2024-7314 CRITICAL 9.8 UPGRADE anji-plus AJ-Report is affected by an authentication bypass vulnerability

References

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