Security readout for executives and security teams
Plain-English summary
CVE-2026-15488 affects shiroiAdmin versions 1.1 and 1.3. A remote attacker may abuse the file upload function to upload unrestricted files. Public exploit information reportedly exists, but CISA KEV is not listed in the provided data. Organizations using shiroiAdmin should prioritize upgrading to version 1.4 and verify exposed deployments.
Executive priority
Prioritize this as a near-term remediation item for any exposed shiroiAdmin deployment. The issue is remotely reachable, unauthenticated per CVSS, and has public exploit disclosure. Upgrade confirmed instances quickly, especially internet-facing systems, while validating for suspicious uploaded content.
Technical view
The issue is in FileController::upload in app/common/controller/FileController.php. Manipulation of the File argument can lead to unrestricted file upload, mapped to CWE-434 and CWE-284. VulDB rates it high with CVSS 2.0 score 7.5, network exploitable, low complexity, and no authentication required. The cited fix is commit 3ecde28ea8a20a3840dbfefd6d6863ee79a83e70 in version 1.4.
Likely exposure
Exposure is likely where shiroiAdmin 1.1 or 1.3 is reachable over a network, especially internet-facing admin panels. The source bundle says the attack may be launched remotely without authentication. Asset owners should confirm whether shiroiAdmin is deployed and whether upload functionality is accessible.
Exploitation context
The VulDB description states that an exploit has been publicly disclosed and may be utilized. The provided bundle does not show CISA KEV inclusion or confirmed active exploitation in the wild. Treat public proof-of-concept availability as increasing urgency, but do not assume compromise without validation evidence.
Researcher notes
There is a source inconsistency: the narrative names versions 1.1 and 1.3 as affected and says 1.4 fixes it, while the structured affected list includes 1.4. Use the advisory narrative and patch reference for remediation direction, and verify against the GitHub release and commit.
Mitigation direction
- Upgrade shiroiAdmin affected deployments to version 1.4 per the cited advisory.
- Review the referenced commit 3ecde28ea8a20a3840dbfefd6d6863ee79a83e70 before deployment.
- Restrict network access to shiroiAdmin administrative interfaces where feasible.
- Check vendor or project guidance for any additional hardening instructions.
- Back up and test the application before production upgrade.
Validation and detection
- Inventory systems for hcr707305003 shiroiAdmin installations.
- Identify deployed versions and prioritize 1.1 and 1.3.
- Confirm whether FileController.php upload functionality is reachable remotely.
- Verify version 1.4 or the cited patch commit is present after remediation.
- Review upload directories and logs for unexpected files or access patterns.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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-2026-15488 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
- High
- CVSS
- 7.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C
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.
CVSS vector scores
4 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.
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C106.4VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C3.93.4VulDBCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C3.93.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P——VulDBVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Base CVSS 3.0 score
7.3HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Base CVSS 2.0 score
7.5HighVector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineVulDB
Advisory disclosed
- Source timelineVulDB
VulDB entry created
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineVulDB
VulDB entry last update
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Source materials
- CVE List V5 sourceCVE List V5
- VDB-377795 | hcr707305003 shiroiAdmin FileController.php upload unrestricted uploadCVE reference, VulDB · vdb-entry, technical-description
- VDB-377795 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference, VulDB · signature, permissions-required
- CVE-2026-15488 | CVE Analysis and ReportCVE reference, VulDB · third-party-advisory
- Submit #843890 | hcr707305003 shiroiAdmin latest (2026-05, commit a145613) Input ValidationCVE reference, VulDB · third-party-advisory
- https://github.com/hcr707305003/shiroiAdmin/releases/tag/v1.4CVE reference, VulDB · patch
- https://github.com/hcr707305003/shiroiAdmin/commit/3ecde28ea8a20a3840dbfefd6d6863ee79a83e70CVE reference, VulDB · patch
- https://github.com/hcr707305003/shiroiAdmin/CVE reference, VulDB · product
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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.