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NVD Vulnerability Details :
CVE-2026-49979
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-24 Jun, 2026 | 22:16
Updated At-29 Jun, 2026 | 16:06

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 1.99, the POST /api/v1/admin/send-test-email endpoint accepts attacker-controlled smtpHost and smtpPort values and establishes a raw JavaMail TCP connection without any IP validation. This completely bypasses WebClientUtils.IP_CHECK_FILTER, which only applies to Spring WebClient HTTP requests. Additionally, the raw MailException.getMessage() is returned verbatim in the API error response, enabling error-based internal port scanning and service banner enumeration. This vulnerability is fixed in 1.99.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.1MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.12.7LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
N/A
Type: Secondary
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 2.7
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
appsmith
appsmith
>>appsmith>>Versions before 1.99(exclusive)
cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-209Secondarysecurity-advisories@github.com
CWE-918Secondarysecurity-advisories@github.com
CWE-918Primarynvd@nist.gov
CWE ID: CWE-209
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-918
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-918
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/appsmithorg/appsmith/security/advisories/GHSA-vvxf-f8q9-86ghsecurity-advisories@github.com
Exploit
Third Party Advisory
Hyperlink: https://github.com/appsmithorg/appsmith/security/advisories/GHSA-vvxf-f8q9-86gh
Source: security-advisories@github.com
Resource:
Exploit
Third Party Advisory
Change History
0Changes found
Details not found