CVE-2023-26559

A directory traversal vulnerability in Oxygen XML Web Author before 25.0.0.3 build 2023021715 and Oxygen Content Fusion before 5.0.3 build 2023022015 allows an attacker to read files from a WEB-INF directory via a crafted HTTP request. (XML Web Author 24.1.0.3 build 2023021714 and 23.1.1.4 build 2023021715 are also fixed versions.)

Published: 2023-04-14 Last update: 2025-02-07 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-26559 is rated Low Risk (39.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.31%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-26559

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-15 0.88% 0.31% -0.57%
2 2026-01-07 0.67% 0.88% +0.21%
3 2025-12-07 — 0.67% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-26559

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-26559

Affected software / configurations for CVE-2023-26559

Vendor Product Version Raw CPE
sync oxygen_content_fusion < 5.0.3 cpe:2.3:a:sync:oxygen_content_fusion:*:*:*:*:*:*:*:*
sync oxygen_xml_web_author < 23.1.1.4 cpe:2.3:a:sync:oxygen_xml_web_author:*:*:*:*:*:*:*:*
sync oxygen_xml_web_author >= 24.0.0.0, < 24.1.0.3 cpe:2.3:a:sync:oxygen_xml_web_author:*:*:*:*:*:*:*:*
sync oxygen_xml_web_author >= 25.0.0.0, < 25.1.0.3 cpe:2.3:a:sync:oxygen_xml_web_author:*:*:*:*:*:*:*:*

References for CVE-2023-26559

cvelogic Threat Intelligence