Security readout for executives and security teams
Plain-English summary
CVE-2023-47890 describes an unrestricted file upload issue in pyLoad 0.5.0. A low-privileged authenticated user could potentially upload files in a way that affects confidentiality, integrity, and availability. The supplied sources rate it high severity, but do not prove active exploitation or name a specific fixed release.
Executive priority
Treat as high priority where pyLoad is deployed, especially if reachable by users outside trusted administration groups. No active exploitation is proven in the supplied sources, but the potential business impact is high and version exposure should be confirmed quickly.
Technical view
The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating network exploitation by an authenticated attacker without user interaction. The source bundle labels the weakness as CWE-22 and describes unrestricted file upload in pyLoad 0.5.0. Product/version metadata is incomplete beyond that description.
Likely exposure
Likely exposure is pyLoad 0.5.0 instances reachable over a network where attackers can obtain or use valid credentials. The bundle’s formal affected-product fields are incomplete, so teams should verify installed pyLoad versions against the CVE record and GitHub advisory.
Exploitation context
The source bundle does not cite CISA KEV listing or any public evidence of active exploitation. Risk remains material because the CVSS vector indicates low complexity, network reachability, and high confidentiality, integrity, and availability impact after authentication.
Researcher notes
The bundle is sparse: it names pyLoad 0.5.0 and an unrestricted file upload issue, but the affected-product fields are n/a and no fix is included. The record was updated on 2026-07-09, so researchers should verify whether the GitHub advisory now provides additional version or remediation detail.
Mitigation direction
- Check the pyLoad GitHub advisory for vendor-confirmed upgrade or remediation guidance.
- Identify and prioritize any pyLoad 0.5.0 deployments.
- Restrict network access to pyLoad administrative or upload interfaces.
- Review accounts and remove unnecessary low-privileged access.
- Monitor pyLoad logs for unexpected uploads or file path activity.
Validation and detection
- Inventory systems for pyLoad and record exact installed versions.
- Confirm whether any pyLoad service is internet-facing or broadly reachable internally.
- Review the GitHub advisory and CVE record for affected-version clarification.
- Check authentication logs for suspicious low-privileged account activity.
- Inspect upload directories for unexpected files or path anomalies.
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-22: 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-47890 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
1 official scoreWe 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:L/UI:N/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
- https://github.com/pyload/pyload/security/advisories/GHSA-h73m-pcfw-25h2CVE reference, mitre
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.