CVE-2024-27730: Insecure Permissions vulnerability in Friendica v.2023.12 allows a remote attacker to obtain sensitive informa

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2024-27730 is a critical-severity flaw (CVSS 9.8) affecting friendica. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insecure Permissions vulnerability in Friendica v.2023.12 allows a remote attacker to obtain sensitive information and execute arbitrary code via the cid parameter of the calendar event feature.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-639
Published	2024-08-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: friendica

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

Am I affected?

Timeline

2024-08-15 19:15 UTCPublished CVE record published
2026-06-17 07:20 UTCUpdated Record last modified

friendica friendica DOWNGRADE

Affected: 2023.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023.12

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2023.12 (Debian / Ubuntu)

apt-cache madison friendica sudo apt install friendica=<VERSION_BEFORE_2023.12> sudo apt-mark hold friendica

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

dnf --showduplicates list friendica sudo dnf downgrade friendica-<VERSION_BEFORE_2023.12> sudo dnf versionlock add friendica

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-2024-27730?

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

Is CVE-2024-27730 being exploited?

CVE-2024-27730 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-2024-27730 affect?

CVE-2024-27730 affects friendica. Severity is critical (CVSS 9.8). Insecure Permissions vulnerability in Friendica v.2023.12 allows a remote attacker to obtain sensitive information and execute arbitrary code via the cid parameter of the calendar event feature.

How urgent is CVE-2024-27730?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-39094 MEDIUM 5.4 DOWNGRADE Friendica 2024.03 is vulnerable to Cross Site Scripting (XSS) in settings/profile via the homepage, xmpp, and
CVE-2024-27731 MEDIUM 6.1 DOWNGRADE Cross Site Scripting vulnerability in Friendica v.2023.12 allows a remote attacker to obtain sensitive informa
CVE-2024-27729 MEDIUM 6.1 DOWNGRADE Cross Site Scripting vulnerability in Friendica v.2023.12 allows a remote attacker to obtain sensitive informa
CVE-2024-27728 MEDIUM 6.1 DOWNGRADE Cross Site Scripting vulnerability in Friendica v.2023.12 allows a remote attacker to obtain sensitive informa
CVE-2024-26495 MEDIUM 6.1 UPGRADE Cross Site Scripting (XSS) vulnerability in Friendica versions after v.2023.12, allows a remote attacker to ex

References

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