Atlassian Confluence 9.3.x < 10.2.17 Multiple Vulnerabilities

critical Web App Scanning Plugin ID 115690

Synopsis

Atlassian Confluence 9.3.x < 10.2.17 Multiple Vulnerabilities

Description

According to its self-reported version number, the Atlassian Confluence application running on the remote host is prior to 9.2.24 or 9.3.x prior to 10.2.17. It is, therefore, affected by multiple vulnerabilities, including flaws in bundled third-party dependencies :

- Multiple man-in-the-middle vulnerabilities in the bundled Netty dependency. (CVE-2026-45674, CVE-2026-47691)

- A remote code execution vulnerability in the bundled lodash dependency. (CVE-2026-4800)

- An injection vulnerability in the bundled Bouncy Castle dependency. (CVE-2026-59650)

- Multiple broken authentication and session management vulnerabilities in the bundled Bouncy Castle dependency. (CVE-2026-8763, CVE-2026-12803, CVE-2026-12802, CVE-2026-59642, CVE-2026-59639, CVE-2026-12816)

- Multiple broken authentication and session management vulnerabilities in the bundled Apache Tomcat dependency. (CVE-2026-55276, CVE-2026-53404)

- Multiple denial of service vulnerabilities in the bundled Netty dependency. (CVE-2026-56745, CVE-2026-59901, CVE-2026-48043, CVE-2026-45416, CVE-2026-73507, CVE-2026-56819, CVE-2026-55833, CVE-2026-55831)

- Multiple denial of service vulnerabilities in the bundled Immutable.js dependency. (CVE-2026-59880, CVE-2026-59879)

- Multiple denial of service vulnerabilities in the bundled Bouncy Castle dependency. (CVE-2026-13506, CVE-2026-58059)

- Multiple remote code execution vulnerabilities in the bundled Bouncy Castle dependency. (CVE-2026-14682, CVE-2026-58060)

- An improper authorization vulnerability in the bundled Netty dependency. (CVE-2026-44249)

- A denial of service vulnerability in the bundled node-tar dependency. (CVE-2026-73566)

- A broken authentication and session management vulnerability in the bundled Netty dependency. (CVE-2026-50010)

- A cross-site request forgery (CSRF) vulnerability in the bundled nanoid dependency. (CVE-2026-73086)

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Atlassian Confluence version 10.2.17 or later.

See Also

https://confluence.atlassian.com/security/security-bulletin-september-15-2026-1822852209.html

Plugin Details

Severity: Critical

ID: 115690

Type: Version Based

Family: Component Vulnerability

Published: 10/16/2026

Updated: 10/16/2026

Scan Template: api, basic, full, pci, scan

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.29

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-4800

CVSS v3

Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS Score Source: CVE-2026-45674

CVSS v4

Risk Factor: Critical

Base Score: 9.3

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

CVSS Score Source: CVE-2026-59650

Vulnerability Information

CPE: cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:*

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/15/2026

Vulnerability Publication Date: 3/30/2026

Reference Information

CVE: CVE-2026-12802, CVE-2026-12803, CVE-2026-12816, CVE-2026-13506, CVE-2026-14682, CVE-2026-44249, CVE-2026-45416, CVE-2026-45674, CVE-2026-47691, CVE-2026-4800, CVE-2026-48043, CVE-2026-50010, CVE-2026-53404, CVE-2026-55276, CVE-2026-55831, CVE-2026-55833, CVE-2026-56745, CVE-2026-56819, CVE-2026-58059, CVE-2026-58060, CVE-2026-59639, CVE-2026-59642, CVE-2026-59650, CVE-2026-59879, CVE-2026-59880, CVE-2026-59901, CVE-2026-73086, CVE-2026-73507, CVE-2026-73566, CVE-2026-8763

CWE: 1241, 1284, 1285, 1287, 190, 20, 284, 285, 287, 295, 300, 345, 346, 347, 352, 354, 358, 400, 401, 407, 409, 670, 674, 697, 74, 770, 772, 778, 789, 835, 94

OWASP: 2010-A1, 2010-A3, 2010-A4, 2010-A5, 2010-A6, 2010-A7, 2010-A8, 2010-A9, 2013-A1, 2013-A2, 2013-A4, 2013-A5, 2013-A6, 2013-A7, 2013-A8, 2013-A9, 2017-A1, 2017-A10, 2017-A2, 2017-A3, 2017-A5, 2017-A6, 2017-A9, 2021-A1, 2021-A2, 2021-A3, 2021-A6, 2021-A7, 2021-A8, 2021-A9, 2025-A1, 2025-A10, 2025-A4, 2025-A5, 2025-A6, 2025-A7, 2025-A8, 2025-A9

WASC: Application Misconfiguration, Buffer Overflow, Credential/Session Prediction, Cross-Site Request Forgery, Denial of Service, Improper Input Handling, Insufficient Authentication, Insufficient Authorization, Insufficient Transport Layer Protection, Integer Overflows, OS Commanding

CAPEC: 1, 10, 101, 104, 108, 109, 110, 111, 114, 115, 120, 125, 127, 13, 130, 135, 136, 14, 141, 142, 147, 148, 151, 153, 160, 17, 182, 19, 194, 197, 209, 21, 218, 22, 229, 23, 230, 231, 24, 242, 250, 261, 267, 273, 28, 3, 31, 34, 35, 384, 385, 386, 387, 388, 39, 402, 42, 43, 441, 45, 459, 46, 462, 463, 467, 469, 47, 473, 475, 478, 479, 482, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 5, 502, 503, 51, 510, 52, 528, 53, 536, 546, 550, 551, 552, 556, 558, 562, 563, 564, 57, 578, 588, 59, 593, 6, 60, 62, 63, 633, 64, 647, 650, 668, 67, 7, 71, 72, 73, 75, 76, 77, 78, 79, 8, 80, 81, 83, 84, 85, 87, 88, 89, 9, 92, 94

DISA STIG: APSC-DV-000460, APSC-DV-000500, APSC-DV-001810, APSC-DV-002250, APSC-DV-002400, APSC-DV-002440, APSC-DV-002500, APSC-DV-002510, APSC-DV-002560, APSC-DV-002590, APSC-DV-002630

HIPAA: 164.306(a)(1), 164.306(a)(2), 164.312(a)(1), 164.312(a)(2)(i), 164.312(b)

ISO: 27001-A.10.1, 27001-A.10.1.2, 27001-A.12.4.1, 27001-A.12.6.1, 27001-A.13.1.1, 27001-A.14.1.2, 27001-A.14.1.3, 27001-A.14.2.5, 27001-A.18.1.3, 27001-A.6.2.2, 27001-A.9.1.2, 27001-A.9.2.1, 27001-A.9.4.1, 27001-A.9.4.4, 27001-A.9.4.5

NIST: sp800_53-AC-3, sp800_53-AU-12, sp800_53-AU-2, sp800_53-CM-6b, sp800_53-IA-2(8), sp800_53-SC-12, sp800_53-SC-24, sp800_53-SC-5, sp800_53-SI-10, sp800_53-SI-10(5), sp800_53-SI-16

OWASP API: 2019-API10, 2019-API2, 2019-API7, 2019-API8, 2023-API2, 2023-API8

OWASP ASVS: 4.0.2-1.4.2, 4.0.2-14.2.1, 4.0.2-14.4.7, 4.0.2-3.2.1, 4.0.2-3.5.3, 4.0.2-4.1.3, 4.0.2-4.2.2, 4.0.2-5.1.3, 4.0.2-5.2.5, 4.0.2-7.2.1, 4.0.2-9.2.1

PCI-DSS: 3.2-10.2, 3.2-2.2, 3.2-6.2, 3.2-6.5, 3.2-6.5.1, 3.2-6.5.10, 3.2-6.5.2, 3.2-6.5.4, 3.2-6.5.8, 3.2-6.5.9