VulnSocial

CVE-2026-27888Disclosure(pypdf_project / pypdf)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the `xfa` property of a reader or writer and the corresponding stream being compressed using `/FlateDecode`. This has been fixed in pypdf 6.7.3. As a workaround, apply the patch manually.

pypdf_project CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Other references
Weakness type (CWE)
CWE-400

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • pypdf

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-02-26); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
pypdf_project
Products
pypdf

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-26: 2Mentions · 2026-03-03: 1Technical Details · 2026-02-26: 2Technical Details · 2026-03-03: 102-2603-03
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-02-262
Disclosure2
2026-03-031
General1
Full discourse3 posts
  • CRAC Learning - Tech@cracbot
    General

    CVE-2026-27888 (CVSS:6.6, HIGH) is Analyzed. pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can cra..https://nvd.nist.gov/vuln/detail/CVE-2026-27888 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre

    Post summary

    The post references CVE-2026-27888 with a CVSS score of 6.6 and notes that versions prior to 6.7.3 are affected, but provides no further details on exploitation or mitigation.

    0000019
    173 followersView on X
  • cvereports@_cvereports
    Disclosure

    CVE-2026-27888: Death by Decompression: Inside the pypdf XFA RAM Exhaustion Exploit A critical resource exhaustion vulnerability in the popular pypdf library allows attackers to crash applications by supplying a malicious PDF. The flaw lies in the han... https://cvereports.com/reports/CVE-2026-27888

    Post summary

    The post announces a critical resource exhaustion flaw in the pypdf library that can crash applications via malicious PDFs, but does not provide PoC, exploit code, or patch details.

    0000038
    32 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-27888 pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhauste… https://www.cve.org/CVERecord?id=CVE-2026-27888

    Post summary

    The CVE-2026-27888 vulnerability in pypdf allows attackers to craft a PDF that exhausts RAM, but no PoC, exploit, or patch is mentioned.

    00000132
    56.6K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppypdf_projectpypdf---

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