Which versions of Xlnt are affected by CVE-2026-2703?

CVE-2026-2703 is a low-severity vulnerability in xlnt-community xlnt (CVSS 3.3). The limited severity suggests constrained impact, typically requiring specific conditions or local access for…. A patch is available.

Is there a public PoC exploit available for CVE-2026-2703?

Yes, a public proof-of-concept exploit is available for CVE-2026-2703. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-2703?

During next maintenance window: Apply vendor patches when convenient. Vendor patch is available.

Xlnt CVE-2026-2703

Q: What is the CVSS score of CVE-2026-2703?

CVE-2026-2703 has a CVSS 4.0 base score of 1.9 (Low). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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. EPSS exploitation probability: 0.0%.

LOW

Numeric Errors (CWE-189)

2026-02-19 cna@vuldb.com

Information Disclosure Xlnt

1.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

1.9 LOW

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

3.3 (LOW) 1.9 (LOW)

Analysis Generated

Mar 12, 2026 - 22:03 vuln.today

PoC Detected

Mar 10, 2026 - 20:28 vuln.today

Public exploit code

Patch released

Mar 10, 2026 - 20:28 nvd

Patch available

CVE Published

Feb 19, 2026 - 07:17 nvd

LOW 3.3

DescriptionCVE.org

A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::decode_base64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access. The exploit has been made available to the public and could be used for attacks. This patch is called f2d7bf494e5c52706843cf7eb9892821bffb0734. Applying a patch is advised to resolve this issue.

AnalysisAI

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Vulnerability AssessmentAI

Risk Assessment	CVSS 3.3 (LOW). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to off-by-one.
Remediation	A vendor patch is available — apply it immediately. Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

During next maintenance window: Apply vendor patches when convenient. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-2703 vulnerability details – vuln.today

Back