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CVE-2026-3463

26
FAUCET Score

CVE-2026-3463 is a heap-based buffer overflow vulnerability in the xlnt-community xlnt library, specifically affecting versions up to 1.6.1 in the Compound Document Parser component. This local vulnerability has a CVSS score of 3.3 (Low), indicating a low attack complexity and impact limited to availability, with no confidentiality or integrity compromise. While a public exploit is available, there is no evidence of active exploitation, and it has garnered minimal community discussion or media coverage. A patch (147) is recommended to mitigate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.6.1CPE matchmatch criteria
cpe:2.3:a:xlnt-community:xlnt:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

1.9LOW

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
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
9.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 35th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

github.com / oneafter/0128/blob/main/xl2/repro
Exploit
github.com / xlnt-community/xlnt
Product
github.com / xlnt-community/xlnt/issues/138
ExploitIssue TrackingVendor Advisory
github.com / xlnt-community/xlnt/issues/138
Issue Tracking
github.com / xlnt-community/xlnt/pull/147
Issue Tracking
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry