CVE-2020-23804

Exp

Uncontrolled Recursion in pdfinfo, and pdftops in poppler 0.89.0 allows remote attackers to cause a denial of service via crafted input.

Published: 2023-08-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-23804 is rated High Exploit Risk (64.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.89%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2020-23804

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-23804

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 2026-06-15 0.26% 0.89% +0.63%
2 2025-11-21 0.92% 0.26% -0.66%
3 2025-11-18 — 0.92% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-23804

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2020-23804

OS Trackers for CVE-2020-23804

vendor priority summary link
debian not yet assigned CVE-2020-23804 not yet assigned priority: Debian including 1 source packages (poppler), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-23804
redhat medium — https://access.redhat.com/security/cve/CVE-2020-23804
suse high CVE-2020-23804 severity important: SUSE including 39 source package names (libpoppler-cpp0, libpoppler-cpp0-0.43.0-16.35.2, …), 173 product×package rows across 32 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7.1, … (32 product lines)): Fixed 142, Known Not Affected 31. https://www.suse.com/security/cve/CVE-2020-23804/
ubuntu medium CVE-2020-23804 medium priority: Ubuntu including 1 source packages (poppler), 8 status rows across 8 suites (bionic, focal, jammy, lunar, mantic, trusty, upstream, xenial): released 4, not-affected 3, ignored 1. https://ubuntu.com/security/CVE-2020-23804

Affected software / configurations for CVE-2020-23804

Vendor Product Version Raw CPE
freedesktop poppler 0.89.0 cpe:2.3:a:freedesktop:poppler:0.89.0:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2020-23804

URL Tags
https://gitlab.freedesktop.org/poppler/poppler/-/issues/936 Exploit Issue Tracking Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00022.html Mailing List Third Party Advisory
cvelogic Threat Intelligence