CVE-2026-55721
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedStorage Concentrator (SC & SCVM) is vulnerable to SQL injection through cookie values processed by the login.pl and debug.pl scripts. The cookie value is incorporated directly into database queries without adequate sanitization, allowing an unauthenticated remote attacker to manipulate those queries and extract sensitive information from the underlying database, including session tokens, password hashes, and stored secret keys.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceSQL injection vulnerability in Storage Concentrator (SC & SCVM) where cookie values in login.pl and debug.pl scripts are incorporated directly into database queries without sanitization, allowing unauthenticated remote attackers to manipulate queries and extract sensitive data including session tokens, password hashes, and secret keys.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Storage Concentrator installationIdentify whether Storage Concentrator (SC or SCVM) software is installed on the system by checking for its typical installation directories or running product-specific commands such as 'rpm -qa' or 'dpkg -l' to list installed packages.Affected if The product is not installed and therefore not affected.
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Determine installed versionRetrieve the installed version of Storage Concentrator using package management tools or product-specific commands. Compare the version against any available release notes or vendor documentation to establish the baseline.Affected if The installed version cannot be determined or is not documented.
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Locate login.pl scriptSearch for the login.pl script in typical web server document roots, CGI-bin directories, or application installation paths. Common paths may include /var/www/cgi-bin/, /opt/sc/, or installation-specific directories.Affected if The login.pl script is not found on the system.
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Locate debug.pl scriptSearch for the debug.pl script in the same locations as login.pl, as both scripts are mentioned in the vulnerability description.Affected if The debug.pl script is not found on the system.
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Verify cookie handling in affected scriptsExamine the source code of login.pl and debug.pl scripts to determine if cookie values are incorporated directly into SQL queries without parameterized queries, prepared statements, or input sanitization.Affected if Cookie values are used in SQL queries without proper sanitization or parameterized queries.
A system is affected if it runs a vulnerable version of Storage Concentrator (SC or SCVM) that contains the login.pl and/or debug.pl scripts where cookie values are processed in SQL queries without sanitization.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement parameterized queries/prepared statements for all database operations in login.pl and debug.pl, and implement proper input validation and sanitization for cookie values before use in SQL queries.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-55721 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-55721 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data