Virtual Event Today: Cyber AI & Automation Summit - Register/Login Now
Connect with us

Hi, what are you looking for?



Atlassian Patches Critical Code Execution Vulnerability in Confluence

Atlassian this week informed customers about the availability of patches for a critical vulnerability affecting the company’s Confluence enterprise collaboration product.

Atlassian this week informed customers about the availability of patches for a critical vulnerability affecting the company’s Confluence enterprise collaboration product.

Atlassian described the flaw as an OGNL injection issue that can be exploited by an authenticated attacker — and in some cases an unauthenticated attacker — to execute arbitrary code on affected Confluence Server and Data Center instances.

The security hole, tracked as CVE-2021-26084 with a CVSS score of 9.8, has been fixed with the release of versions 6.13.23, 7.4.11, 7.11.6, 7.12.5 and 7.13.0.

This is the first security advisory released by Atlassian for its Confluence product since December 2019.

The vulnerability was reported to the vendor through its bug bounty program by Benny Jacob of SnowyOwl. Atlassian assigned it a P1 priority rating.

According to Atlassian’s bug bounty program page on Bugcrowd, Confluence Server vulnerabilities rated P1 can be rewarded with up to $6,000. The highest payout offered by Atlassian through its bug bounty program is $10,000.

Both profit-driven cybercriminals and state-sponsored threat actors have been known to target vulnerabilities in Atlassian products, which is why it’s important that organizations install patches as soon as possible.

Related: Atlassian Patches Critical Vulnerability in Jira Data Center Products

Advertisement. Scroll to continue reading.

Related: Researchers Detail Exploit Chain for Hijacking Atlassian Accounts

Related: AESDDoS Botnet Targets Vulnerability in Atlassian’s Confluence Server

Written By

Eduard Kovacs (@EduardKovacs) is a managing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join us as we delve into the transformative potential of AI, predictive ChatGPT-like tools and automation to detect and defend against cyberattacks.


As cybersecurity breaches and incidents escalate, the cyber insurance ecosystem is undergoing rapid and transformational change.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...

IoT Security

A group of seven security researchers have discovered numerous vulnerabilities in vehicles from 16 car makers, including bugs that allowed them to control car...


A researcher at IOActive discovered that home security systems from SimpliSafe are plagued by a vulnerability that allows tech savvy burglars to remotely disable...


Patch Tuesday: Microsoft calls attention to a series of zero-day remote code execution attacks hitting its Office productivity suite.


Patch Tuesday: Microsoft warns vulnerability (CVE-2023-23397) could lead to exploitation before an email is viewed in the Preview Pane.


The latest Chrome update brings patches for eight vulnerabilities, including seven reported by external researchers.