CVE-2026-33407: Wallos is an open-source, self-hostable personal subscription tracker

Q: How do I fix CVE-2026-33407?

wallos: upgrade to 4.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-33407 being exploited?

CVE-2026-33407 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33407 affect?

CVE-2026-33407 affects wallos. Severity is critical (CVSS 9.1). Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, Wallos endpoints/logos/search.php accepts HTTP_PROXY and HTTPS_PROXY environment variables without validation, enabling SSRF via proxy hijacking.

Q: How urgent is CVE-2026-33407?

Priority 50/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-33407 is a critical-severity flaw (CVSS 9.1) affecting wallos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, Wallos endpoints/logos/search.php accepts HTTP_PROXY and HTTPS_PROXY environment variables without validation, enabling SSRF via proxy hijacking. The server performs DNS resolution on user-supplied search terms, which can be controlled by attackers to trigger outbound requests to arbitrary domains. This issue has been patched in version 4.7.0.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-918, CWE-922
Published	2026-03-24
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2026-03-24 18:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

wallosapp wallos UPGRADE

Affected: < 4.7.0

Fixed in: 4.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.7.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wallos

Note

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

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-2026-33407?

wallos: upgrade to 4.7.0. Exact commands for each OS are on this page.

Is CVE-2026-33407 being exploited?

CVE-2026-33407 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-2026-33407 affect?

CVE-2026-33407 affects wallos. Severity is critical (CVSS 9.1). Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, Wallos endpoints/logos/search.php accepts HTTP_PROXY and HTTPS_PROXY environment variables without validation, enabling SSRF via proxy hijacking.

How urgent is CVE-2026-33407?

Priority 50/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-33417 MEDIUM 6.5 UPGRADE Wallos is an open-source, self-hostable personal subscription tracker
CVE-2026-33401 MEDIUM 6.5 UPGRADE Wallos is an open-source, self-hostable personal subscription tracker
CVE-2026-33400 MEDIUM 5.4 UPGRADE Wallos is an open-source, self-hostable personal subscription tracker
CVE-2026-33399 HIGH 7.7 UPGRADE Wallos is an open-source, self-hostable personal subscription tracker
CVE-2026-30842 MEDIUM 4.3 UPGRADE Wallos is an open-source, self-hostable personal subscription tracker

References

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