CVE-2025-58759: TinyEnv is an environment variable loader for PHP applications

Routine

MEDIUM 5.1UPGRADE

CVE-2025-58759 is a medium-severity flaw (CVSS 5.1) affecting tinyenv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TinyEnv is an environment variable loader for PHP applications. In versions 1.0.9 and 1.0.10, TinyEnv did not properly strip inline comments inside .env values. This could lead to unexpected behavior or misconfiguration, where variables contain unintended characters (including # or comment text). Applications depending on strict environment values may expose logic errors, insecure defaults, or failed authentication. The issue is fixed in v1.0.11.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.1 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-20
Published	2025-09-09
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: datahihi1

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

Am I affected?

Timeline

2025-09-09 20:15 UTCPublished CVE record published
2026-06-17 09:44 UTCUpdated Record last modified

datahihi1 tinyenv UPGRADE

Affected: >= 1.0.9 and < 1.0.11

Fixed in: 1.0.11

Safe to downgrade to: a release before 1.0.9

1. Check installed version

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

2. UPGRADE to 1.0.11 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tinyenv

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 1.0.9 (Debian / Ubuntu)

apt-cache madison tinyenv sudo apt install tinyenv=<VERSION_BEFORE_1.0.9> sudo apt-mark hold tinyenv

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

dnf --showduplicates list tinyenv sudo dnf downgrade tinyenv-<VERSION_BEFORE_1.0.9> sudo dnf versionlock add tinyenv

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-2025-58759?

tinyenv: upgrade to 1.0.11. Exact commands for each OS are on this page.

Is CVE-2025-58759 being exploited?

CVE-2025-58759 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-2025-58759 affect?

CVE-2025-58759 affects tinyenv. Severity is medium (CVSS 5.1). TinyEnv is an environment variable loader for PHP applications. In versions 1.0.9 and 1.0.10, TinyEnv did not properly strip inline comments inside .env values. This could lead to unexpected behavior or misconfiguration, where variables con

How urgent is CVE-2025-58759?

Priority 21/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-58758 MEDIUM 5.1 UPGRADE TinyEnv is an environment variable loader for PHP applications

References

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