How severe is CVE-2026-41314?

CVE-2026-41314 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-41314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41314?

CVE-2026-41314 affects Pypdf Project Pypdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41314?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41314 have an EU (EUVD) identifier?

Yes. CVE-2026-41314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25116.

When was CVE-2026-41314 published?

CVE-2026-41314 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-41314

CVE-2026-41314 is a medium-severity vulnerability in Pypdf Project Pypdf with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-789.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 4.8
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25116
Weakness: CWE-789
Affected product: Pypdf Project Pypdf
Published: 2026-04-22
Last modified: 2026-06-17

Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing an image using `/FlateDecode` with large size values. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

Frequently asked questions

What is CVE-2026-41314?: pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing an image using `/FlateDecode` with large size values. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.
How severe is CVE-2026-41314?: CVE-2026-41314 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-41314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41314?: CVE-2026-41314 affects Pypdf Project Pypdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41314?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41314 have an EU (EUVD) identifier?: Yes. CVE-2026-41314 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25116.
When was CVE-2026-41314 published?: CVE-2026-41314 was published on 2026-04-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*

More vulnerabilities in Pypdf Project Pypdf

CVE-2026-103000 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large…
CVE-2026-102999 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files…
CVE-2026-102998 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF with form field values can…
CVE-2026-102997 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF containing a partially…
CVE-2026-102996 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1…
CVE-2026-102995 — High (CVSS 7.5): pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large…

All CVEs affecting Pypdf Project Pypdf →

Other CWE-789 vulnerabilities

CVE-2026-82435 — Critical (CVSS 9.8): Description The worker's Netty message decoder is installed ahead of the SASL authentication handlers in the…
CVE-2026-77410 — High (CVSS 8.9): RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.recvContent in channel.go preallocates the…
CVE-2021-34869 — High (CVSS 8.8): This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop…
CVE-2021-34868 — High (CVSS 8.8): This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop…
CVE-2026-112399 — High (CVSS 8.7): Pillow is a Python imaging library. From 8.1.0 until 13.0.0, Pillow can allocate an APNG disposal background at the…
CVE-2026-63574 — High (CVSS 8.7): Memory allocation with excessive size value in the OpenPGP signature and user attribute subpacket parsers…

Browse all CWE-789 vulnerabilities →