CVE-2026-2898: funadmin Deserialization Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-gcxp-xg77-798j
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CVSS 5.5
CWE-502 CWE-20
Published
Advisory Summary

CVE-2026-2898 is a LOW (CVSS 5.5) deserialization vulnerability vulnerability (CWE-502: Deserialization of Untrusted Data) affecting funadmin libraries in the Packagist ecosystem. The issue involves deserialization vulnerability in backend endpoint via authcloudservice getmember function. Remediation is available in the latest vendor maintenance releases.

CVE-2026-2898 at a Glance

CVE Identifier CVE-2026-2898
GHSA Identifier GHSA-gcxp-xg77-798j
Severity LOW
CVSS v3.1 Base Score 5.5
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product funadmin
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-2898

To remediate this vulnerability, upgrade all affected funadmin dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

funadmin/funadmin fixed: Latest secure release 
Upgrade funadmin/funadmin to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for funadmin/funadmin

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-2898, inspect your project dependencies for funadmin:

inspect dependencies for funadmin/funadmin

Analyze the terminal output to locate any version of funadmin in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In funadmin, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A vulnerability was detected in funadmin up to 7.1.0-rc4. This issue affects the function getMember of the file app/common/service/AuthCloudService.php of the component Backend Endpoint. The manipulation of the argument cloud_account results in deserialization. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVE-2026-2898 Affected funadmin Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
funadmin/funadmin
 Packagist
≤ 7.1.0-rc4

References

NVD — CVE-2026-2898 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2898
funadmin Source Repository REPOSITORY
https://github.com/I4m6da/CVE/issues/5
funadmin Source Repository REPOSITORY
https://github.com/I4m6da/CVE/issues/5#issue-3890444166
funadmin Source Repository REPOSITORY
https://github.com/funadmin/funadmin
vuldb.com/ WEB
https://vuldb.com/?ctiid.347209
vuldb.com/ WEB
https://vuldb.com/?id.347209
vuldb.com/ WEB
https://vuldb.com/?submit.753976

Frequently Asked Questions

What is CVE-2026-2898?
CVE-2026-2898 is a security vulnerability in funadmin involving Deserialization Vulnerability in Backend Endpoint via AuthCloudService getMember Function under CWE-502: Deserialization of Untrusted Data.
Which funadmin versions are affected?
Affected versions include releases prior to current release patches across affected packages: funadmin/funadmin.
What version fixes CVE-2026-2898?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is funadmin/funadmin affected?
Yes, funadmin/funadmin is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-2898?
CVE-2026-2898 has a CVSS v3.1 base score of 5.5 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-2898?
CVE-2026-2898 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Packagist dependencies for CVE-2026-2898?
Run the dependency tree command: 'inspect dependencies for funadmin/funadmin'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gcxp-xg77-798j",
  "modified" : "2026-02-26T15:32:52Z",
  "published" : "2026-02-22T03:30:26Z",
  "aliases" : [ "CVE-2026-2898" ],
  "summary" : "funadmin: Deserialization Vulnerability in Backend Endpoint via AuthCloudService getMember Function",
  "details" : "A vulnerability was detected in funadmin up to 7.1.0-rc4. This issue affects the function getMember of the file app/common/service/AuthCloudService.php of the component Backend Endpoint. The manipulation of the argument cloud_account results in deserialization. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "funadmin/funadmin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "7.1.0-rc4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-2898"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/I4m6da/CVE/issues/5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/I4m6da/CVE/issues/5#issue-3890444166"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/funadmin/funadmin"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?ctiid.347209"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.347209"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?submit.753976"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-502" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-26T15:32:52Z",
    "nvd_published_at" : "2026-02-22T01:16:00Z"
  }
}