Security readout for executives and security teams
Plain-English summary
MajorDoMo has a reflected XSS flaw in command.php. A victim who opens a crafted link could have attacker-controlled JavaScript run in their browser in the MajorDoMo context. This is not listed as actively exploited, but it can affect confidentiality and integrity if users with access to the interface are targeted.
Executive priority
Address during the next normal vulnerability remediation cycle, sooner if MajorDoMo is internet-exposed or used by privileged administrators. The flaw is credible but requires user interaction and has no cited active exploitation.
Technical view
The qry parameter in command.php is rendered into HTML without sanitization using htmlspecialchars(), including an input value attribute and paragraph content. The issue is CWE-79 reflected XSS with CVSS 3.1 score 6.1, network attack vector, low complexity, no privileges required, and required user interaction.
Likely exposure
Exposure is likely limited to organizations running sergejey MajorDoMo with accessible command.php. The source bundle lists affected version information as version 0 with default status unknown, so deployments need local version and code validation.
Exploitation context
The record does not indicate active exploitation, and KEV is false. Exploitation requires a user to interact with a crafted URL. The business risk depends on who can access MajorDoMo and what session privileges their browser carries.
Researcher notes
Evidence supports reflected XSS in command.php through unsanitized qry rendering. Affected-version data is incomplete in the bundle, so researchers should avoid broad version claims and verify source or deployed behavior directly.
Mitigation direction
- Review and apply the upstream fix PR after confirming branch compatibility.
- Upgrade to a release containing the command.php escaping fix when available.
- Follow MajorDoMo project guidance if no packaged fix exists for your branch.
- Limit MajorDoMo web interface access to trusted users and networks where feasible.
- Treat suspicious MajorDoMo links as phishing risk until remediated.
Validation and detection
- Inventory MajorDoMo deployments and confirm whether command.php is present.
- Check whether deployed code sanitizes qry before rendering HTML.
- Confirm whether the fix from PR #1177 is included in your build.
- Review web access logs for unusual command.php qry usage.
- Retest with a benign XSS validation string in a controlled environment.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-27176 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
5.1MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- MajorDoMo Revisited: What I Missed in 2023CVE reference, VulnCheck · third-party-advisory
- Fix PR: sergejey/majordomo#1177CVE reference, VulnCheck · issue-tracking
- VulnCheck Advisory: MajorDoMo Reflected Cross-Site Scripting in command.phpCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.