VulnerabilityPublished 23 Feb 2026

CVE-2026-2976: FastApiAdmin · Information Disclosure

Affects FastApiAdminSource CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
FastApiAdmin	Affected =2.0 =2.1 =2.2.0	Fixed in–

AI-suggested

To mitigate CVE-2026-2976, organizations should prioritize upgrading FastApiAdmin to a patched version once it is released by the vendor. In the interim, implement strict input validation on the file_path parameter to ensure it does not allow directory traversal or access to unauthorized files. Employ allowlisting of permissible file paths or directories to restrict downloads to safe locations only. Enforce robust access controls and authentication on the download endpoint to limit access to authorized users. Consider implementing web application firewalls (WAFs) with rules to detect and block suspicious file path manipulations. Regularly audit and monitor logs for unusual file access patterns indicative of exploitation attempts. Additionally, conduct code reviews and security testing focused on file handling functions to identify and remediate similar issues proactively. Educate developers on secure coding practices related to file operations and parameter sanitization to prevent recurrence.

Description

A weakness has been identified in FastApiAdmin up to 2.2.0. Affected by this issue is the function download_controller of the file /backend/app/api/v1/module_common/file/controller.py of the component Download Endpoint. This manipulation of the argument file_path causes information disclosure. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

Impact

The primary impact of CVE-2026-2976 is unauthorized information disclosure, which can compromise confidentiality by exposing sensitive files or data stored on affected FastApiAdmin servers. Organizations using vulnerable versions may inadvertently leak internal documents, configuration files, or other critical information to remote attackers. Although the vulnerability does not affect integrity or availability, the exposure of sensitive data can lead to further attacks such as social engineering, credential theft, or lateral movement within networks. The ease of remote exploitation without user interaction or elevated privileges increases the risk, especially for publicly accessible administrative interfaces. This can affect organizations across sectors including technology, finance, healthcare, and government that rely on FastApiAdmin for backend management. The medium severity rating reflects the moderate impact and relatively straightforward exploitation, but the potential for cascading effects elevates the overall risk posture.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 07:16 UTC

Technical details

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