CVE-2025-27980: cashbook v4.0.3 has an arbitrary file read vulnerability in /api/entry/flow/invoice/show?invoice=.

This week

MEDIUM 6.5REMOTEDOWNGRADE

CVE-2025-27980 is a medium-severity flaw (CVSS 6.5) affecting cashbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

cashbook v4.0.3 has an arbitrary file read vulnerability in /api/entry/flow/invoice/show?invoice=.

Why this priority

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	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-200
Published	2025-04-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: oldmoon

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

Am I affected?

Timeline

2025-04-15 15:16 UTCPublished CVE record published
2026-06-17 09:04 UTCUpdated Record last modified

oldmoon cashbook DOWNGRADE

Affected: 4.0.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0.3 (Debian / Ubuntu)

apt-cache madison cashbook sudo apt install cashbook=<VERSION_BEFORE_4.0.3> sudo apt-mark hold cashbook

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

dnf --showduplicates list cashbook sudo dnf downgrade cashbook-<VERSION_BEFORE_4.0.3> sudo dnf versionlock add cashbook

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-2025-27980?

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

Is CVE-2025-27980 being exploited?

CVE-2025-27980 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-2025-27980 affect?

CVE-2025-27980 affects cashbook. Severity is medium (CVSS 6.5). cashbook v4.0.3 has an arbitrary file read vulnerability in /api/entry/flow/invoice/show?invoice=.

How urgent is CVE-2025-27980?

Priority 39/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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