Description

SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.

INFO

Published Date :

March 15, 2021, 6:15 p.m.

Last Modified :

Sept. 21, 2021, 5:48 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2021-27890 has a 10 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-27890 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mybb mybb
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-27890.

URL Resource
http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html Third Party Advisory VDB Entry
https://blog.sonarsource.com/mybb-remote-code-execution-chain Exploit Third Party Advisory
https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq Patch Release Notes Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 2 months, 3 weeks ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.

None

Updated: 8 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.

None

Updated: 1 year, 7 months ago
0 stars 2 fork 2 watcher
Born at : April 8, 2023, 6:19 a.m. This repo has been linked 923 different CVEs too.

None

Updated: 9 months, 1 week ago
20 stars 3 fork 3 watcher
Born at : Feb. 14, 2023, 6:10 p.m. This repo has been linked 921 different CVEs too.

None

Updated: 9 months ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 930 different CVEs too.

None

Updated: 4 months, 3 weeks ago
8 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 943 different CVEs too.

安全类各家文库大乱斗

HTML CSS JavaScript Go Python Shell C

Updated: 2 months, 2 weeks ago
856 stars 214 fork 214 watcher
Born at : Feb. 15, 2022, 3:14 a.m. This repo has been linked 568 different CVEs too.

None

Updated: 2 months, 2 weeks ago
66 stars 14 fork 14 watcher
Born at : Oct. 13, 2021, 4:56 a.m. This repo has been linked 175 different CVEs too.

Mybb associate CVE-2021-27890 & CVE-2021-27889 to RCE poc

JavaScript Python

Updated: 1 year, 2 months ago
11 stars 2 fork 2 watcher
Born at : March 25, 2021, 6 a.m. This repo has been linked 2 different CVEs too.

Some exploits I have written to showcase and to share

PHP Python C JavaScript

Updated: 7 months, 1 week ago
52 stars 11 fork 11 watcher
Born at : March 5, 2019, 10:25 a.m. This repo has been linked 5 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-27890 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-27890 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Sep. 21, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html Third Party Advisory http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html Third Party Advisory, VDB Entry
    Changed Reference Type https://blog.sonarsource.com/mybb-remote-code-execution-chain No Types Assigned https://blog.sonarsource.com/mybb-remote-code-execution-chain Exploit, Third Party Advisory
  • CVE Modified by [email protected]

    Aug. 20, 2021

    Action Type Old Value New Value
    Added Reference https://blog.sonarsource.com/mybb-remote-code-execution-chain [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 23, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html No Types Assigned http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html Third Party Advisory
    Changed Reference Type https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq No Types Assigned https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq Patch, Release Notes, Third Party Advisory
    Added CWE NIST CWE-89
    Added CPE Configuration OR *cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:* versions up to (excluding) 1.8.26
  • CVE Modified by [email protected]

    Mar. 22, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-27890 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.24 }} -0.01%

score

0.62127

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability