CVE-2025-50900: An issue was discovered in getrebuild/rebuild 4.0.4

Q: How do I fix CVE-2025-50900?

rebuild: upgrade to newer than 4.0.4. Exact commands for each OS are on this page.

Q: Is CVE-2025-50900 being exploited?

CVE-2025-50900 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-2025-50900 affect?

CVE-2025-50900 affects rebuild. Severity is critical (CVSS 9.8). An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecode(request.getRequestURI()) to ob

Q: How urgent is CVE-2025-50900?

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

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2025-50900 is a critical-severity flaw (CVSS 9.8) affecting rebuild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecode(request.getRequestURI()) to obtain the URL-decoded request path, and then determine whether the path endsWith /error. If so, execute return true to skip this Interceptor. Else, redirect to /user/login api. Allowing unauthenticated attackers

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	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-284
Published	2025-08-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: getrebuild

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

Am I affected?

Timeline

2025-08-25 15:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

getrebuild rebuild UPGRADE

Affected: <= 4.0.4

Fixed in: newer than 4.0.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.0.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rebuild

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-2025-50900?

rebuild: upgrade to newer than 4.0.4. Exact commands for each OS are on this page.

Is CVE-2025-50900 being exploited?

CVE-2025-50900 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-2025-50900 affect?

CVE-2025-50900 affects rebuild. Severity is critical (CVSS 9.8). An issue was discovered in getrebuild/rebuild 4.0.4. The affected source code class is com.rebuild.web.RebuildWebInterceptor, and the affected function is preHandle In the filter code, use CodecUtils.urlDecode(request.getRequestURI()) to ob

How urgent is CVE-2025-50900?

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

Related CVEs

CVE-2024-25294 CRITICAL 9.1 DOWNGRADE An SSRF issue in REBUILD v.3.5 allows a remote attacker to obtain sensitive information and execute arbitrary
CVE-2025-28056 CRITICAL 9.8 UPGRADE rebuild v3.9.0 through v3.9.3 has a SQL injection vulnerability in /admin/admin-cli/exec component.
CVE-2024-46413 MEDIUM 5.1 UPGRADE Rebuild v3.7.7 was discovered to contain a Server-Side Request Forgery (SSRF) via the type parameter in the co
CVE-2024-1099 LOW 3.5 UPGRADE A vulnerability was found in Rebuild up to 3.5.5
CVE-2024-1098 MEDIUM 4.3 UPGRADE A vulnerability was found in Rebuild up to 3.5.5 and classified as problematic

References

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