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» CVE-2025-46656
python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.
NVD Status： Analyzed ，CVE State: published
Threat Intelligence & Risk Assessment for CVE-2025-46656
Conclusion & alert: CVE-2025-46656 is rated Exploit Available (50/100) : CVSS Low severity, with low exploitation likelihood (EPSS 0.18%).Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB).Mandatory action: 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-2025-46656
EDB-ID
Source
Kind
Published
Link
—
nvd_ref
exploit_tag
Exploit-DB ↗
Exploit prediction scoring system (EPSS) score for CVE-2025-46656
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
0.07%
0.18%
+0.12%
2
2026-02-20
0.02%
0.07%
+0.05%
3
2025-04-27
—
0.02%
—
Full EPSS history
(3 records total)
Common vulnerability scoring system (CVSS) metrics for CVE-2025-46656
CVSS metrics for this CVE.
Base score
Version
Severity
Vector
Exploitability
Impact
Score source
2.9
3.1
LOW
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
1.4
1.4
[email protected]
3.3
3.1
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:L)
A normal user session is enough; they don’t have to be admin.
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:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
1.8
1.4
[email protected]
Weakness enumeration for CVE-2025-46656
GitHub Security Advisory for CVE-2025-46656
GHSA-7mpr-5m44-h73r · Severity: low · Ecosystem: pip
— markdownify allows large headline prefixes such as <h9999999>, which causes memory consumption
Affected software / configurations for CVE-2025-46656
References for CVE-2025-46656
cvelogic
Threat Intelligence